The North American Summer Esperanto Course (NASK) is June 29th to July 17th, 2009, in sunny San Diego, CA!
There's a beautiful, informative new website available with tons of great information about the program:
http://esperanto.org/nask/
I hope you'll seriously consider making the trip to California for NASK. It's a considerable investment - in time, money, energy - but the rewards are even greater.
Darcy Ross on Local Groups Haroldo de Esperanto on NASK
Esperanto: Learning and Using the International Language.By David Richardson.
See more recommendations for beginners, next steps, and advanced readers.