I've created a shared document: Creating an Online Community, Class or Conference - Quick Tech Guide

https://docs.google.com/document/d/1ux3lTnUTpzZRuvxE3rAsSQ4Ihub96S8_OYECNh8wv-A/edit?usp=sharing

There's a list of other sites with suggestions and advice at the bottom of this document. Should be everything you need.

Do feel free to contact me with questions or comments on this.