SIY Course owners access their videos here

Choose your course and click "Purchase".
Scroll to click "Join".
Follow the prompts to "Log in" or create a program account
Check out using the coupon code from inside your manual (the total due will be $0).
You will be brought to the Online Program page where you can view the videos for your course, step by step. Each time you log in you can begin where you left off. Videos may be watched in any order, unlimited times for as long as you need them.

Note: The coupon code inside your manual will only work for the course you purchased. If you wish to purchase additional course videos you may checkout at the listed price.