Honestly, there isn't much complex to learn about ATV. What do you want to do with it? I like to use my Flickr account for a screen saver, mirror my Ipad at times, stream music from my music apps like Rhapsody and Pandora to my sound system--can connect with PC and of course use all the things available on the screen--Netflix, Youtube, and lots more. Love my ATV--even thinking about buying a second for a TV in another part of the house.
But do ask if you have any issues.