Survival Haitian, Freeman, Bryant C.: This is an excellent starter book available free from the University of Kansas Creole Institute with both pdf and MP3 lessons here.
Ann pale kreyòl, An Introductory Course in Haitian Creole, Valdman, Albert: One of the best intermediate Haitian Creole language learning text and audio, available through here at the Indiana University Creole Institute, along with many other language resources.
Learner’s Dictionary of Haitian Creole, Also from the University Creole Institute, is an excellent reference to have with you as you are learning to speak Creole. It is organized in a way that helps you look up words and use them in context. Available here.
Haitian Creole Language and Culture Summer Institute: an excellent three-week intensive program in different levels, geared toward the acquisition and practice of Haitian Creole. Offered every summer at the University of Massachusetts Boston campus.