Fighting Frog shows us how to use an SRS (Spaced Repetition Software) like Anki to practice StarCraft 2 Tactics you learn from replays or elsewhere. An SRS is like a digital flashcard and using it can help reinforce your memory so you can remember what to do and when to do it.
Download Anki for free: https://apps.ankiweb.net/
Spawning tool article: https://lotv.spawningtool.com/build/110252/