How to use Skills

Executive summary

Open a course, work lessons in order, watch the video when present, read the short explanation, then pass the quiz. Your browser remembers completed lessons — there is no account yet.

Course shape

1. Course overview — modules and your progress bar.
2. Module overview — lesson list for that chapter.
3. Lesson — Watch → Learn → Check (quiz).

Progress

• Passing a lesson quiz marks that lesson complete.
• Progress lives in localStorage on this device.
• Clearing browser data for this site resets progress.
• Lesson IDs are stable, so we can sync to an account later without rewriting content.

Video

Authors embed YouTube, Vimeo, or Cloudflare Stream URLs. If a lesson has no URL yet, you will see “Video coming soon” — read and quiz still work.

Next

1. Skills overview
2. SQL fundamentals