Introduction
Welcome
What you should know before watching this course
Using the exercise files
What we'll build

1. Understanding Key-Value Observation
What is key-value observation?
Using key-value observation
Pros and cons of key-value observation
Implementing key-value observation in Objective-C

2. Understanding the Notification Center
What is the Notification Center?
When should the Notification Center be used?
Pros and cons of the Notification Center
Implementing the Notification Center in Objective-C

3. Understanding Delegation
What is delegation?
When should delegation be used?
Pros and cons of delegation
Writing your own Delegate Protocol

Conclusion
Next steps