It's all about
GT5...

I really credit the game with teaching me the racing line and the apexes - past that it's not all that helpful.
What you've brought up really makes things interesting. You really need to know the limits of your vehicle and don't forget to stay to the right so the faster cars can overtake you. Respecting the track and the other cars goes a long way. As a n00b it behooves you to take it slow and steady.
I am quite the novice (I have done 9 laps, which to be fair, is ~110 miles

), but I feel that I have a pretty good understanding of what's coming up next and plan accordingly... I really don't know how to explain it any better.