The main website for Meetup.com is: http://www.meetup.com/
There are three plans:
Basic Plan: enables organizers to have up to 3 other organizers on their Leadership Team and up to 50 members in their Meetup Group;
Unlimited Plan: grants organizers an unlimited Leadership Team, as well as an unlimited number of members;
Meetup Pro Plan: http://www.meetup.com/help/topics/30/ This page has links on the left side that gives details abouthow to set up a Meetup Pro account;
Contacting Meetup.com and Customer Service: There is no listed phone number to call Meetup.com. But they do have a place where you can send an email, and they reply, but how long it takes them to reply is unknown.
Organizing a Meetup Group
How to Organize your Meet-up Group: This section tells you how to actually set the group up, etc.
Organizer's Index: This has a large number of FAQs, how-tos, tips, suggestions, and advice on organizing Meetup groups;
Subject Groups There are hundreds of groups worldwide on any topic you find interesting, and there is undoubtedly a group in your area covering one or more subjects you are interested in: http://www.meetup.com/topics/
Meetup Groups are organized under the following subject categories:
o Dancing
o Singles
o Support
o Tech
o Writing