Wikivoyage is a project of the wikimedia foundation to create a free, complete, up-to-date and reliable travel guide from around the world, written and edited by volunteer contributors from all walks of life. The more people who volunteer to contribute, the faster the project will achieve its goal.
It has all the information you need about Monaco’s neighbourhoods, how to get around, where to stay and what to see and do. It also has sections devoted to language and work.