I have Cyclecraft by John Franklin (also recommended here), and it's very good.
I'm not a very good cyclist either, but no crashes for a long time. I know a fall is coming sooner or later though.
A long time back I raced my friends up the school drive which had speed bumps, and when I went over the last one had the horror of watching my front wheel roll away ahead of me in slow motion. Oops!!!!
The bad bits about that crash were that it was right in front of a lot of my fellow pupils, and to add insult to injury I vaulted the forks and landed on my front wheel, bending it so I couldn't ride home. Then my heavy bag of books landed on my head, and my bike landed on top of me after that.