Instructors
The people who write, record and mark the courses (sample).
The people on the videos
Instructors who used these skills at work for years before they taught them, and who mark your exercises themselves.

Hana Kovač
Spreadsheets, charts
Eleven years as a finance analyst (sample)
Marcus Ade
SQL basics
Data engineer at a delivery firm (sample)
Ellen Shaw
Writing at work
Former newspaper sub-editor (sample)
Tomás Rey
Bookkeeping
Runs a bookkeeping practice for shops (sample)
How instructors work
Each instructor writes and records their own course, then reads every final exercise from it. Marking takes up to five working days and comes back as written notes on your own file (sample).
Once a month each instructor answers questions live for an hour; the recording is added to the course.
Watch the first lesson of any course, free
Tell us which course and we email a login for its first chapter. No card, no trial that turns into a subscription.