I just got my beta invitation and spent about an hour playing around this morning. The site looks INCREDIBLE.

Don't be intimidated. Aviary was designed to accomodate hobbiests to professionals. It is a "suite of rich internet applications (RIAs) geared for artists of all genres. From image editing to typography to music to 3D to video, they have a tool for everything. Their goal is to create a complex ecosystem for artists and provide the world with free, capable collaborative tools and an approach to collaboration and rights management that will turn the marketplace for online art on its head".