Ready to clean my colon... but where to start?

Ok, I'm anxious to start cleaning out my colon, but I don't know where exactly to start.

Enema or colonics? I've heard colonics are better, but I don't have the slightest clue as to how to find out if someone is in my area who does them... and if no one is around, is an enema still worth trying out (and are there any things I should be careful of when doing it?)

Also, are there any "pill form" supplements worth taking?

I could use all the help I can get :)

-Chris Tweet