The Getting Started with Mendeley Guide describes how to perform many of the basic steps that new users of Mendeley need to know. It is available as a PDF download from their website, and is automatically included in the library when Mendeley Desktop is downloaded.
Help Guides and Videos are available from the Mendeley Resource Center.
The FAQ page answers the most frequently asked questions from Mendeley users.
Users can report bugs and request new features in the Feedback Forum.
The Mendeley Blog contains a wealth of information about Mendeley - news and updates, technical support, tips and tricks, and even examples from Mendeley users. The 'How-To' Series is especially useful to those new to Mendeley and highlights some tips and tricks to help users get started.