# Swift — build and test

[Agila University track](https://edu.agilaos.com/track.php?track=17&lang=en)

About 15 minutes per lesson. Predict, run, change, explain, then complete the check in University.

- [Lesson 1: Collections and repeated work](lesson-1/lesson.html)
- [Lesson 2: A language feature worth understanding](lesson-2/lesson.html)
- [Lesson 3: Build, break, and test a study planner](lesson-3/lesson.html)