I created some Realflow training for 3D Artist Magazine a while back, that's just made it onto the cover disk of Issue 26 (the latest issue). Even though I'm bias
I have to say the training is good (as is the magazine) you can pick up the latest issue here. http://www.3dartistonline.com/back_issues.php
or of course at your local news agent.
If your interested in Realflow you can get our Realflow Basics full tutorial here http://simplymaya.com/autodesk-maya-...=189&sub_cat=0