A self-directed course that builds your own fluency in database structuring, engineering, and management — grounded in freight, portable to anything you build next.
Four stages, in order. Read each lesson, then talk it through with the built-in tutor until you can apply it without looking. The knowledge ends up in you, not the app.
Each one holds a single concept, a diagram, and a freight example that grounds it.
It teaches that exact concept and drills you with questions you have to answer — right here on the page.
Only once you've explained it back without peeking. Progress saves to this device.
Don't check a lesson off because you read it. Check it off when the tutor has drilled you and you've applied it unprompted. Reading is recognition; explaining it back is knowing — and only one of them ships apps.