I've only just started with it, but I've found the Django project's own online documentation to be entirely sufficient for me with regards to Django per se.
I Lie! there was one point I couldn't quite understand early in my experience; at the bottom of each page on docs.djangoproject.com they mention several ways to find help, so I used the IRC channel and my question was answered immediately, more than satisfactorily, and entirely unceremoneously. I was elated!
After that the documentation was entirely useful on it's own..
Wait! again, not quite true.. I use wikipedia and google to fill in the gaps in my knowledge while reading.. but I think it's reasonable to assume most people do that or something similar...