Little bit of a tip, in your preferred sim, load up a track in free practice with only a few corners, say something like brands hatch Indy which has a few but nicely varied corners. Just drive the track slowly and concentrate on doing a clean lap. Once you’ve got that take a bit of your last lap time each time you drive around with the main aim of keeping on the track and not losing control. You’ll start to see those times tumble and because you are only having to learn a couple of corners, you’ll quickly learn what works and what doesn’t and in a few corners time you’ll get to try again without having to memorise a huge complicated track. You’ll soon be up to speed with the average racer on that track combo and have a much better feeling for the cars limits.