A wise man once told me "(s)he who gets ON a bike falls off of the bike". Alas it's true!
When i first started riding i'd get freaked out about crashes too. Now i can pretty much tell if something is "broken" or not (that *snap* sound when you land is usually bad......).
I ditto the arnica advice. You can use the topical gel on bumps and bruises, but not open wounds. Then you can take it orally. I like comfry for broken bones(but make sure your bone is set by a professional first).
I take vitamins C, E and I(ibuprofen) for recovery. And yes get your tetnus shot. A nurse recommended one every 3-5 years when i told her what my hobbies were.
Just keep your rash clean. Tegaderm and the like can help with that.
Don't stop moving . If i'm too injured to ride i at least try to do some walking/hiking.
At night ice everything that hurts, pour a glass of red wine, and start flipping through all of the bike catalogs....(works for me).
Heal quickly
