I understand that where I will be in Kenya some English is spoken, however the primary language is Swahili. Therefore, I will be trying to pick up as much Swahili as I can before I leave. To do so I have ordered the recommended Lonely Planet Guide to Kenya as well as Peter Wilson's Swahili. I also picked up an English-Swahili Dictionary. I found the best prices on Amazon and even qualified for the Super Saver Shipping. I ordered them on October 1st and just two of the books arrived today. I am still waiting on the Peter Wilson book. The Super Saver on Amazon saves you a little money, but one thing it doesn't save you on is time.
In the meantime, I will be using the Pimsleur Swahili CD set I found at the public library.