Watching a three-hour course gives you the chemical sensation of competence without any of the neural pathways.
The cycle of actual retention is brutal and simple: pick a tiny project that forces you to use the skill. Attempt it without looking at the solution. Hit an error. Read only enough documentation to resolve that specific error. Continue.
When you finish, explain what you did in three sentences to someone else. If you can't, you don't own it yet.
TEAM GROWTHLY // ORIGINAL NOTETHE ROOM MATTERS