There are many websites that contain reliable information on learning styles and multiple intelligences. Here are some recommended sites to get you started:
Multiple Intelligences
Multiple Intelligences Oasis: From Howard Gardner
Tapping into Multiple Intelligences: From WNET New York Public Media
Learning Styles
Learning Styles and Strategies: By R. Felder and B. Soloman, North Carolina State University
VARK: A Guide to Learning Styles