I doubt anyone has made a Timeline tutorial so far. If somebody knows better, put the link in here pls.
Why don't you just try it out a little and if you get stuck, ask questions about the actual problem you're having.
I used the Timeline object only once so far for a boss fight. It's pretty self-explanatory for the most part. Maybe you should just give it a try first, check out the available conditions/actions for the object, etc.