Swahili language learning materials are available from various bookstores and computer software vendors, etc. See Foreign Languages.
Language Programs:
THE ROSETTA STONE series includes a program for learning Swahili (http://www.rosettastone.com/homeschool/ ), Asia for Kids (http://www.AsiaforKids.com), etc.
VOCABULEARN Swahili (Penton Overseas), (audiocassettes with book). Order from book stores.
Children's Literature Selections (available from various bookstores):
JUMBO MEANS HELLO: SWAHILI ALPHABET BOOK by Feelings (Dial).
MOJA MEANS ONE: SWAHILI COUNTING BOOK by Feelings (Dial)
Online Resources include:
ABOUT.COM's African Culture -- Languages ... and Dialects web area (http://africancultures.about.com/culture/africancultures/cs/language/index.htm) includes links to related information, resources, etc.
THE KAMUSI PROJECT's website (http://www.cis.yale.edu/swahili/) includes an Internet Living Swahili Dictionary, links to other Swahili language learning resources, etc.