Course 01 · Foundations
Get your bearings
Before you touch a tag, understand how tracking actually works and decide what's worth measuring.
By the end: You can explain how a hit reaches an analytics tool, what tags, triggers and variables do, and you've planned what to measure.
Modules
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GTM fundamentals primer
A 5-minute tour of tags, triggers, variables and the dataLayer: the four ideas everything else builds on.
8 Lessons
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How web tracking really works
The mechanics under the hood: page loads, hits, cookies and attribution.
7 Lessons
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Measurement planning & the dataLayer
Decide what to measure and design a clean dataLayer before you ever open GTM.
7 Lessons