Here are some tutorial videos for Ch. 2
Functions: http://youtu.be/dU7ZYr6o0qA
Relations and functions: http://youtu.be/Tck1KurFg2c
Standard forms and linear functions: http://youtu.be/xImDai43tR0
Writing linear equations: http://youtu.be/-YURXuqYe3o
Solving rational equations: https://www.youtube.com/watch?v=DS_KYSYoMEw