Hello Craig, and welcome to The Sufferfest / Wahoo SUF Training. 
Awesome that you already discovered the yoga, strength and mental offerings from SUF. It will help you become a more well rounded athlete.
Let me answer some of your questions with links to and replies from other topics:
Please have a look at this topic. While the premise is a bit different, the tips given in here should be helpful.
You have two options for a longer cooldown:
- When you finish your workout and the “Workout Done”-Screen pops up, just click on “Resume Workout” and move the timeline cursor to the place you want to start off from again.
This way you can extend the workout as you please. - Use another video to cooldown: For example Open 15 or Extra Shot (at reduced intensity).
You are absolutely right that there is a wealth of information in this forum. There are so many great articles from the coaches.
And if you have any questions or need further support, feel free to ask anything.
I’m curious, did you already decide on a training plan and set some goals for yourself?
Happy suffering. See you around.
EDIT: Just in case you didn’t know. There is an ongoing promotion through October 19th to get a free Wahoo heart rate monitor if you dedice on an annual subscription. More info right here.