1. Watch the Introduction to Writing Your Own Functions in R video:

2. Do Writing Functions

3. Do Task 1 of Use and Modify.

4. Watch the How Functions Execute video:

5. Do Task 2 Use and Modify.

6. Watch the Setting Default Values for Arguments video:

7. Do Default Arguments.

8. Watch the When To Use Named And Unnamed Arguments video:

9. Watch the Combining Functions video:

10. Do Combining Functions.

11. Watch the Calling Functions From Inside Other Functions video:

12. Watch the RStudio Tips and Tricks for Working With Functions video:

13. Take a nap, go for a walk, read a book, or play a video game.