Every trainer runs on the same engine: choose your topics, practice with instant feedback and hints, or run a timed exam simulation and review where you went wrong — question by question, topic by topic.
Editor UI, expressions and variables, node types, flow logic, error handling, self-hosting and AI agents — built on the Level 1 & 2 material.
Object model, product catalog, subscriptions and orders, bill runs, invoicing, payments, Invoice Settlement, taxation, revenue and APIs.
Practice mode gives instant feedback, tips and explanations. Exam mode is timed and holds feedback until the end.
Pick specific topics, a question count, and — where difficulty is tagged — easy, medium or hard.
See per-topic performance, review every miss with its explanation, then retry just the wrong answers.