Learn Good SWAHILI: Step by Step: A Language Textbook

A 800+ page textbook for anyone new to Swahili or wants to improve or brush up. Step by step explanation with lots of examples and exercises, plus indexes, a 3,500+ bidirectional vocabulary with mini-thesaurus, and appendices.
If you are going to East Africa, this is the text book you need to enhance your experience there, for being able to communicate with locals in their language is always most satisfying.