I find the most important notes one should take.
Determine how much carry and roll you have with each iron in low wind conditions with full and neutral backspin. Neutral would be default spin.
It takes alot of time as each club behaves differently, and the wind effects are also different for each club.
As you get to know your clubs especially your irons, varying the amount of spin will also impact carry and roll. This game is not without practice and time.
Thus, when you are playing by yourself use the replay feature alot.
Reverse view and forward views are a great tool. Use them.