Google Analytics 4 for Beginners: Metrics and Reports

Meera runs a small handloom store in Jaipur and spends Rs 40,000 a month on Instagram and Google ads. At the end of the month her agency sends a PDF that says "12,000 visits". She nods, but she cannot tell which of those visits led to a single order. This is the gap that Google Analytics 4 for beginners should fill. Once you can read it, the question changes from "how many people came?" to "which people came, what did they do, and what should we change?" In this guide we explain GA4 the way we do in NIFM digital marketing classes: plain words, a rupee example and a named source for every definition.

What is Google Analytics 4 and why did it replace Universal Analytics?

Google Analytics 4, usually written GA4, is the current version of Google's analytics product. Google announced it in October 2020 under the name "App + Web" and then branded it GA4. Universal Analytics, the older version most marketers grew up with, stopped processing new data in standard properties on 1 July 2023, and the paid 360 version followed a year later (Source: Google Analytics Help and Google Marketing Platform announcements, 2022-2024). Any serious website today uses GA4 or another tool, so learners joining the industry only need to learn GA4.

The real change is in the model. Universal Analytics counted sessions and page views, and every other action had to be added on top as a special case. GA4 starts with the event. A page view is an event, a scroll is an event, a click on a phone number is an event, and a purchase is an event. That one decision lets the same tool describe a website, an app or both together (Source: Google Analytics Help, "About Google Analytics 4 properties").

What are the basic terms: events, sessions and users?

Most confusion in the first week comes from vocabulary. Here is the short version, in the order you will meet the terms inside the reports.

Event

An event is one recorded action. Some are collected automatically, such as page_view, first_visit and session_start. Others come from "enhanced measurement", which can record scrolls, outbound clicks, site search, video engagement and file downloads without extra code when you switch it on. You can also create custom events, for example "course_brochure_click" (Source: Google Analytics Help, "Automatically collected events" and "Enhanced measurement").

Session

A session is a group of events from one visitor within a continuous visit. By default a session ends after 30 minutes of inactivity. If Meera's customer opens the shop page in the morning and comes back in the evening, GA4 counts two sessions (Source: Google Analytics Help, "About sessions").

User

A user is, roughly, a person or device that has used your site. GA4's headline user metric is "active users", which counts people who had an engaged session or whose first visit was recorded. Do not treat a user as a verified human. Someone using a phone and a laptop can appear as two users, and browser privacy settings change counts too (Source: Google Analytics Help, "Active users").

What is engagement rate, and what happened to bounce rate?

An engaged session in GA4 is one that lasted longer than 10 seconds, or had a key event, or had at least two page or screen views. Engagement rate is engaged sessions divided by total sessions. Bounce rate, which Universal Analytics reported by default, returned to GA4 in 2022 as the opposite figure, that is, the percentage of sessions that were not engaged. So a 60% engagement rate means a 40% bounce rate (Source: Google Analytics Help, "Engagement rate and bounce rate"). You can also change the 10-second threshold in the admin settings, up to 60 seconds, so always check the property setting before you compare two sites.

Why does this matter? Take two hypothetical pages. A long recipe blog may have a 25-second average visit and one page view, and it still answers the reader's question perfectly. Older bounce rate would have called that a failure. Engagement rate, with its 10-second rule, calls it engaged. The metric is not perfect, but it is closer to how real readers behave.

How do key events work, and what should you mark?

A key event is an event you tell GA4 is important to the business. Until early 2024 Google called these "conversions". Some actions are plain to pick: a form submission, a click on a "call now" button, a download of a brochure or a completed purchase. In GA4 you either mark an existing event as a key event or create a new event from an existing one in the admin area (Source: Google Analytics Help, "About key events", 2024).

The beginner's mistake is to mark everything. If every page view is a key event, the number looks wonderful and means nothing. A good rule from our classroom is to mark only the events that move someone one step closer to the business goal, and to limit them to a handful. For a training institute website, that could be "enquiry form submitted" and "brochure downloaded". For Meera's store, it would be "add to cart" and "purchase".

A hypothetical example in rupees

Suppose Meera's store gets 12,000 sessions in a month from all sources, and the key event "purchase" fires 96 times. The key event rate is 96 divided by 12,000, which is 0.8%. If her ad spend of Rs 40,000 brought 4,000 of those sessions and 40 of the purchases, then the cost per purchase from ads is Rs 40,000 divided by 40, or Rs 1,000. If her average order is Rs 1,400, she can start asking whether margins support that cost. These numbers are invented for illustration and are not benchmarks or advice. The point is that without key events, the report would only say "12,000 visits".

Which GA4 reports should a beginner read first?

The left menu of GA4 can look crowded. For the first month, ignore most of it. Four report groups answer four simple questions, and each one points to an action.

Acquisition: where did visitors come from?

Acquisition reports group traffic by source and by channel. The default channel groups include Organic Search, Paid Search, Direct, Referral, Organic Social, Email and Display. "Direct" often becomes a dumping ground for traffic whose source GA4 could not identify, so a very large Direct share is a hint to check your campaign tagging, not a reason to celebrate. The standard way to tag links is with UTM parameters such as utm_source, utm_medium and utm_campaign, which you add to the links in your emails, posts and ads (Source: Google Analytics Help, "Default channel group" and "Collect campaign data with custom URLs").

Engagement: what did they do on the site?

The Engagement group shows events, pages and screens. This is where you learn which pages hold attention and which pages visitors leave quickly. A page that gets many sessions but has a low engagement rate deserves a second look. Perhaps the headline promised something the page did not deliver, or the page loads slowly on mobile.

Monetisation: did it earn anything?

For shops, this group shows purchases and revenue. For other sites, it is less useful, and you can read your key events in the Engagement group instead. Revenue appears here only if your store sends purchase events with value, usually through an e-commerce plugin or Google Tag Manager.

Retention: do they come back?

Retention shows how many new users return and how engaged they stay across days and weeks. For a blog or a training website, returning visitors are a good sign that the content is useful. For a one-time purchase business, retention matters less.

How do you set up GA4 on a website step by step?

You do not need a client to practise. Any small site, even a free blog, is enough. The usual order is as follows.

1. Create an account and a property in Google Analytics with a Google login. Choose your reporting time zone as India Standard Time and the currency as the Indian rupee, because changing them later can confuse your data.
2. Add a web data stream for your site's address. GA4 gives you a measurement ID that begins with "G-".
3. Install the tag. You can paste the Google tag into the site's head section, use a plugin on WordPress, or deploy it through Google Tag Manager.
4. Switch on enhanced measurement and check which events it collects.
5. Extend data retention from 2 months to 14 months in the data settings (Source: Google Analytics Help, "Data retention").
6. Mark your key events and test them with the DebugView or Realtime report before you trust the numbers.
7. Link Google Search Console if you own the site, so that search queries and landing pages sit beside your analytics data.

If any of this feels like jargon, our digital marketing courses teach these steps on practice sites with a faculty member next to you, which is faster than learning from scattered videos.

What are the common GA4 mistakes beginners make?

After reviewing practice reports from learners, the same errors come up again and again.

• Counting your own visits. If you and your team keep opening the site, your visits enter the data. Use internal traffic filters so your numbers are not inflated.
• Trusting a number before testing the tag. A missing tag on one template, such as the thank-you page, can silently break a key event.
• Marking too many key events. A cluttered list hides the one number that matters.
• Ignoring campaign tags. Without UTM parameters, email and social traffic often lands under Direct.
• Comparing different date ranges and thresholds. Compare like with like, and check whether the engaged-session setting is the same.
• Reading data as exact truth. GA4 can apply thresholds and modelling in some reports, and browser privacy tools reduce what any tool can see. Treat it as strong evidence about direction, not an audit of every visitor.

Consent and privacy

Analytics tags use cookies or similar identifiers, so privacy law matters. In India, the Digital Personal Data Protection Act, 2023 governs the processing of digital personal data and puts weight on notice and consent (Source: Digital Personal Data Protection Act, 2023, Ministry of Electronics and Information Technology). Its rules are being phased in, so a business should check current government notices and take advice from a qualified legal professional before deciding how its cookie notice and tags work. Marketers should know this as part of the job, but should not act as lawyers.

Can GA4 skills help your digital marketing career in India?

Analytics sits underneath almost every digital marketing role. An SEO executive uses it to see which pages bring organic visits. A performance marketer uses it to compare channels. A content writer uses it to learn which topics readers actually finish. For a fresher, a simple portfolio is more convincing than a certificate alone: one practice site, a working GA4 setup, two key events and a one-page report explaining what you found and what you would change. Our guide on how to choose a course at NIFM explains how to compare syllabus, practice and learning goals before you enrol, and the same questions apply to a digital marketing course.

No course can promise a job or a salary. What a good one does is give you hands-on practice, a portfolio piece and a clear vocabulary. You can compare the options on the Diploma in Digital Marketing course page, where the syllabus is listed.

Where NIFM fits in

NIFM is an education platform. We teach digital marketing, accounting, taxation and financial markets, and we do not run campaigns, sell advertising or promise rankings and returns. If you are unsure which course suits your background, the NIFM contact page lets you speak to a counsellor, and the NIFM home page lists everything we teach.

Sources: Google Analytics Help (About Google Analytics 4 properties; About events; Automatically collected events; Enhanced measurement; About sessions; Active users; Engagement rate and bounce rate; About key events; Default channel group; Collect campaign data with custom URLs; Data retention), 2022-2026; Google Marketing Platform announcements on the Universal Analytics sunset, 2022-2024; Digital Personal Data Protection Act, 2023, Ministry of Electronics and Information Technology, Government of India. Author note: written by NIFM digital marketing faculty for learners; last updated 19 October 2026.