There is a sticky at the top of this forum on support groups.
The list is a few years old and came from the Yahoo group MC Needs. (MC stands for Montgomery County.) You need to register to post and probably search that forum.
Not a support group, but I know people that have done these workshops, so you may find them helpful and feel less overwhelmed:
http://www.parentingplaygroups.com/parentworkshopdescriptions.htm#parentingtopic