You tagged me, but I suspect you meant to tag Coach Chad Timmerman? If so, he’s @ Chad (without the space, I just don’t want to tag him unnecessarily). I am not a TrainerRoad employee, but I help moderation on the forum.
To your basic suggestion and questions, TR has a number of resources for learning and using their app.
My primary source is the main support center.
https://support.trainerroad.com/hc/en-us
I use the search there to find answers to many questions.
Lots of training questions are covered here.
They also have the blog that can be searched too.
When you are active on a TR plan, you can use the new Plan Builder to setup training with events in mind.