The Hanyes Manuals are pretty good, and pretty basic. The MB shop manuals are good for lots of detail, but assume you know your way around your car a lot more than a Hanyes Manual. You can get the shop manuals in paper copies, but be prepared to shell over atleast $100. You can get a CD version MUCH MUCH cheaper.
There are also online versions of the shop manuals.
mb.braingears.com
Skinnerbox