They are fairly simple, most come with instruction and you can buy them prepacked now. However, for a true experience, I recommend going the extra mile and buying the old-style hot water bottle type enema bag.

There are very few actual health concerns about the, just so long as you make sure all your equipment is clean and sanitary. I don't think anyone ever had long-lasting problems from a little water in the bum.

Just don't try too much too fast. Work up to larger quantities.