Learning with the video player
Controls, keyboard shortcuts, progress tracking and how resuming works.
01The player
Lessons stream in adaptive quality — the player picks the sharpest resolution your connection can sustain and steps down gracefully on weak networks instead of buffering. Scrub the timeline to see thumbnail previews of every moment, so you can jump straight to the part you need.
02Keyboard control
The player is fully keyboard-navigable: space toggles play, arrow keys seek, F toggles fullscreen, M mutes. Tab reaches every control, which makes long study sessions much faster than mousing around.
03Progress that remembers
Watched lessons are marked automatically and your position is saved continuously. Leave mid-lesson, come back days later on any device, and the course resumes exactly where you stopped. Course pages show your completion percentage; the Learning tab shows it across all your courses.
04Offline and downloads
Videos stream through short-lived signed links for your account only — there is no download button, and shared links expire. This protects instructors' work; it also means you need an internet connection to learn.