I am the organizer of a logic reading group at the Graduate Center. We are currently working on set theory.

The book we are reading is:

Set Theory and the Continuum Problem (Dover Books on Mathematics)

Authors: Smullyan, Raymond M.; Fitting, Melvin
Publisher: Dover Publications
Published: 2010

Meetings are on Friday at the Philosophy Department of the Graduate Center.

If you are interested, drop me an email.