We will have documentation when the program is finished, but you have to bear in mind that this is a beta version. As such, you shouldn't really expect it to work flawlessly, and docs are usually the last thing to be done.
As BlueCELL said, there is an official website on the way.. Don't know if this will go live for beta releases, or just a while before the final.. We shall see.
Trooper: Can you just confirm the build number you're using? Also, did you have any of the older builds prior to this?
Cheers :-)