Theory is everywhere. The difference is the practice behind it.
Every experiment opens a running web application right next to the brief. No screenshot, no video, you test it yourself.
Title, steps, expected and actual behaviour, severity: you learn the structure development teams actually read.
Every submission is reviewed and commented on. You see exactly what convinced and what is still missing.
Four steps that repeat for every task, until the technique sticks.
Short units of video, script and quiz cover the theory.
The experiment opens a real test environment in the browser.
You document your findings as a structured defect report.
Hands-on courses on test design, test execution and defect reporting.
Your trainer reviews the submission and replies.