I too got a lot of bloating at first. But it went away within a week or so and then I felt great. I think the bloating is a good sign. I was willing to suffer through it and I'm glad I did.
Check out Dom's kefir site. You can find out how to culture kefir from goat, cow, rice or nut milk.
Also, in response to another posting, the Body Ecology Diet program uses a starter culture to make kefir. My understanding is that it's much better to use live grains which are available for the cost of shipping from Dom's site.