You select your avatar in the Profile section (see the top right of your screen for the link).
Yes, almost every public avatar on the system is a copyrighted image owned by Honda. I believe their use here falls under "fair use" since this is a free, non-commercial system.
You can "download" of them them by simply right-clicking on the avatar graphic and selecting "save as." Then you can print them or save them or whatever you want.