I attended my first track session / school at Pocono Raceway a few weeks ago. Fortunately, I did not crash, but came very close to it. It was my third session of the day, but the first session that I was riding my own pace (instead of following the instructor). After a few laps, I started to get a little more confident and became more aware of the faster pace of the other riders on the track at the time.
So, I (stupidly - ha ha) decided to increase my speed where I could, which was really only the straight sections. I also started to enter the turns faster, which my ability probably wasn't equipped to handle just yet. After coming off a very slow and tight right hand turn, I accelerated hard on the straight away approaching a left hand turn. Because of my inexperience, lack of ability, etc (and the fact that I was going a lot faster than I had been, which caused me spend too much attention on my speed and not enough on everything else), I wound up missing my turn-in RP. I turned late and was not able to "flick" the bike into the turn either, so I wound up running very wide. I knew right away I was heading off the track, but fortunately still had enough track to get upright, slow the bike, and head safely into the grass. I kept the bike up and re-entered the track when it was safe. That definitely woke me up.
Funny, because the instructor said, prior to the third session, that if someone goes down today, THIS will be the session it happens in!
After reading ATOTW II, I came up with a LAUNDRY list of things I did wrong on that particular turn alone. My entry speed (for my ability) was too fast for that corner, I missed my turn-in RP, I wasn't able to turn (or flick) the bike quick enough, my body was not positioned properly prior to the turn, and I don't recall looking through the turn (probably because I screwed up everything else so badly, there was no point - ha ha!).
Dan