You learn better by not buying a book and start coding.

As said before Django is very logical.

I read "Learn python in ten minutes" and just tried django.

http://www.poromenos.org/tutorials/python

As Adrian said, the online docs and books are very helpful and you can ask anything to the django users group :

http://groups.google.com/group/django-users/

You can also check out some code here :

http://www.djangosnippets.org/

http://code.djangoproject.com/wiki/CookBook