I also use TP every day. IMO the free version is not much good in terms of a training aid. The most important feature for me is to set the Dashboard (premium) to "Last 90 days and next 21". Then I design workouts for the next 1-3 weeks and hopefully, do them. If I design a new workout, I save it to my Workout Library. Right now I have 264 saved workouts to choose from. Premium also comes with a list of Training Plans which automatically paste into the Calendar view.
Google "trainingpeaks ctl atl tsb" to see what Trainingpeaks is all about. It probably takes a couple of months of using TP to figure it all out. Mine goes back to 2012.
__________________
Results matter