In this comprehensive study, Marvin Fox offers an approach to Moses Maimonides that illuminates the intersections of his philosophical, religious, and Jewish visions—ideas that have embattled readers of Maimonides since the twelfth century.
Good if you're into medieval philosophy and if you want to read Maimonides a little more deeply but Leo Strauss' meta-esoteric introductory essay isn't helping you out at all.
However, it's probably not the thing if you don't already have an established interest in philosophy/Maimonides.