Theory first. You start with what these systems actually are and where they quietly go wrong, then work through how you test for it - data quality, drift, bias, adversarial inputs, oracles. Thirteen modules that follow the official ISTQB CT-AI v1 outline, one lecture a day, ending in a timed mock exam. The certificate is the bonus on top; the understanding is the point.
The first 12 lectures are free, end to end, no card and no signup wall. That is the whole Intro module plus all of Module 1. The other 51 open up when you join.
They are free, end to end, no card. If the way it is taught works for you, the other 51 lectures and the full mock exam are one payment away.