You can't really use something until you learn how, right?
So user satisfaction with a website in most cases is going to depend on how fast your visitor can learn to use the site and its fetures to get her what she wants. It is the place usability1 begins and it begins most happily when your visitor didn't give it a thought. Read Steve Krug's very powerful but simple book, Don't Make Me Think.
What's the secret? Be conventional. Wacky oddly placed menus, navigation that depends on tricked out flash movies, hidden or oddly placed search boxes, even too small type are all goi