We will meet to Discuss Technical Explanation and meta topics.
Optional reading: http://yudkowsky.net/rational/technical (Evan will summarize for those that haven't read it)
Meta topics will be things like how to keep meetups interesting, what to cover in future meetups, organizational roles, etc. Suggested reading: http://lesswrong.com/lw/crs/how_to_run_a_successful_less_wrong_meetup/
If you're only going to read one of these, I suggest reading the meetup guide. If you don't want to bother reading all 33 pages, David suggests the following sections:
How To Build Your Team of Heroes Long-term Meetup Group Maintenance Meetup Content: Discussions and Presentations