There are a number of user communities that share a wide variety of information, including advice on projects, machine and software questions, resources for materials and supplies, and success stories!
For the Love of Melco Embroidery Machines (Facebook)
Melco Embroidery Machines for Business (Facebook)
AMAYA Users (Independent AMAYA User Community)
YouTube Video Playlists (Melco's video instruction on maintenance, common and specialty embroidery techniques and digitizing, including complete DesignShop v10 instructions)