Use the videos to give you ideas. What parkour should I do right now?
Use them for study. What does this handler do that looks lovely to me? Can I copy that loveliness?
Use them for Qs. Hm, not sure why that handler's doing that, I'll post a question, see if anyone else can shed light.
And more Qs. I hate what that handler's doing, does everyone else hate it too or is it just me?