The Happy Tagger blog
GTM Guides & Tutorials
Clear, practical walkthroughs of the things that actually trip people up in Google Tag Manager. Read the guide here, then practice it on your own container in the playground.
What Is the dataLayer in Google Tag Manager? A Plain-English Guide
The dataLayer is the bridge between your website and your tags. Here's what it actually is, why it exists, and how to push and read values without the jargon.
GTM vs GA4: What's the Difference (and Do You Need Both)?
Both come from Google, both involve a snippet, but GTM and GA4 aren't alternatives. One delivers data, the other analyzes it. The difference, and why you use both together.
What Is Google Tag Manager? A Plain-English Guide for Marketers
Everyone's told to 'just set up GTM' with no explanation of what it does. In plain terms: it's a control panel for your site's tracking, so you change tags without editing code.
Offline Conversion Tracking Explained (Click → CRM → Sale)
For anything with a sales cycle, the real conversion happens later, on a call or in the CRM. Offline conversion tracking ties the closed deal back to the click that started it, using an identifier that survives the cookieless future.
Enhanced Conversions Explained (and How to Set Them Up in GTM)
Cookies and consent make real conversions invisible. Enhanced Conversions recover some by matching on hashed first-party data. What they are, Web vs Leads, and the GTM setup.
Reading is step one. Doing is step two.
Every guide links into a hands-on lesson where you load your own GTM container, run a realistic scenario, and debug it in Tag Assistant — nothing to install, nothing that touches a production site.
Browse the learning path →