A Real Swift Project
For when the concepts make sense in isolation but never seem to connect.
Learning individual Swift concepts in a playground is valuable, but it doesn't show you how they fit together in a real app. You might understand variables, functions, and structs separately - and still have no idea how an iOS project is organized.
This is a complete, working iOS app you can run in the Simulator right now. Every line of code is commented with an explanation of what it does, which Swift concept it uses, and how it connects back to what you've been learning.