The tutorial section with racing lines is a great addition to the site, but it seems to me that one of the hardest things to learn about each track is how to handle the first curve in a cup race. For instance, I was really stumped by Mt Panorama until someone on this site offered the suggestion to stay to the outside on the first turn and you can have enough speed coming out of it to pass many cars on the next straight. Similarly, beanziecat posted a video of how to win a cup at Mazda Laguna Seca that gave me my first turn strategy for there.
Thanks for all of the help that this community provides
mr