Prior to turning the wrench, it is often a good idea to read an article or two concerning the repair. The website 10W40.com includes a collection of articles sorted by type of problem or project. You can find a variety of free auto repair advice in the site's database of auto repair articles.
The site also includes a search feature that lets you search the guide directly. Here's the link: 10W40.com
Additional Resources
The AMG Mercedes-Benz Enthusiast's blog recommended repair shop page.
