Many of the other links on the FGC Help Guide page are Everton sites. Here is where your can learn starting techniques and hints. The purpose is to collect and coordinate the collection of information that will assist individual research their families. So on a county GenWeb site you likely will find addresses of county government offices, newspaper address, library addresses.
Some counties also contain cemetery listings, census information, and marriage information.
Each county differs in what is available, depending on the amount of time these volunteers can give. It can be your starting point for researching other countries. This links you to both the US GenWeb Archives FTP site and also to the GenWeb pages of each state. Each state GenWeb site then links you to the county GenWeb pages. Both have posted Michigan Marriage transcriptions done by Jack and Marianne Dibean.