Pagan groups are pretty varied, just like other groups, although to make things more confusing in the Pagan community we have diversity built in where other groups tend to be more uniform. In the Pagan community we have Druids, Wiccans of all sorts, non-Wiccan Witches, those who are reconstructing ancient religions -- and not all these groups agree on things of course!
A lot of the success of a particular group depends on how willing the members are to work together despite differences. If you're lucky you'll have a group that is accepting and encourages people to respect the differences. If you're unlucky you'll have a group where an individual or small group tries to control everyone else, who dictates to everyone else, and who tries to eliminate differences of opinion.
I always encourage people to familiarize themselves with Isaac Bonewits' excellent Cult Danger checklist, which is on his website at
http://www.neopagan.net/ABCDEF.htmlIf a group you are considering has a number of the items on the checklist then you might want to steer clear of them. Being solitary is always better than being caught up in the wrong group! Finding a good group though is definitely worth pursuing.