Kiswahili is basically a Bantu language with a very significant Arabic influence. Pure Kiswahili is spoken at the coast, and Nairobi's version, with its many Anglicisms. Kiswahili is the easiest language to pronounce in the word as all the words are pronounced as written, letter for letter. Kenya's other official language is English and is used widely in all walks of life. Kiswahili is a very beautiful and, as grammar books tell you, an easy language to grasp. For serious student the best book is simplified by P.M. Wilson but for the basics you can use Teach Yourself Swahili by Perrott. The following is just but a few to keep you in touch.