// crash course · neuroscience-built
Learn the command line
the way your brain actually retains.
Bash, git, HTTP, Docker, JS/TS, SQL — eight modules built around active recall, spaced repetition, free recall, and sleep consolidation. Three short sessions a day, ~50 min total, ~20 days to fluency.
// the engine
Four principles, wired into the site
Active recall
Every lesson ends with type-it-yourself prompts. No copy-paste. Retrieval beats re-reading by ~50% (Karpicke 2008).
Spaced repetition
Cards resurface at 1d / 3d / 7d / 14d / 30d intervals (Cepeda 2008). The forgetting curve never gets a foothold.
Real practice
An in-browser bash sandbox grades what you type. You don't earn the next concept until your fingers can produce the last one.
Sleep consolidation
Hard-mode locks tomorrow's lesson until you've actually slept. REM and slow-wave sleep do the heavy lifting overnight (Walker 2017).
// the rhythm
Three sessions a day
07:00
Morning · 20 min
New lesson. Fresh prefrontal cortex does best at encoding.
13:00
Afternoon · 10 min
Sprints on this morning's content. Interrupt the forgetting curve.
20:00
Evening · 10 min
Review yesterday's cards. Sleep then cements them overnight.