Choosing the right types for your data will make a big difference for the efficiency, complexity and clarity of your code. Furthermore, data structures can encode important invariants of your code. Examples are non-empty lists or optional fields. DAML truly excels when it comes to modeling data.
DAML’s standard library and Prelude module provides you with all the essential data containers like lists, sets and maps together with efficient algorithms to work with them.
What’s really great about the two tutorials is that @drsk came up with quizzes per topic, allowing you to check your knowledge while going through the tutorial