Core Data Tutorials
Learn how to use Apple's Core Data framework to work with local data in your app. This will allow you to save and restore data as well as build apps with larger data sets that need to be local in the app.
Where to Get Help?
Core Data Basics
Set up Core Data in Your Xcode Project (New or Existing)
CRUD - Create, Retrieve, Update, and Delete
Sorting and Filtering
Entities and Relationships