I am newbie when it comes to development, and I had the same choice between developing my product on RoR or Django. I chose Django, and between the tutorial, docs, and the google mailing list, I think there is a pretty good community out there.

A book would be nice, but there are some good apps on registraton, profile, etc. available on GitHub or BitBucket out there. Granted, it might not be plug and play like in the case of RoR, but I have found it to be alright so far.