How do I get my purchased books in Mavericks iBooks? With the new iBooks for Mac I get all my books that I didn't buy in the iTunes store. But all books I did buy on the iTunes store, I don't get! When I go to the preferences and tell iBooks to sync purchases I just get a dialog saying, I need to authorize my Mac. But there is no hint on how to do that. How do I fix this?
In iBooks: menu 'Store' -> 'Authorize this computer'?