This is a good place to start:
With your Apple ID you can log in and get to most all
the information that you would want. Start here first to get
an understanding of the Mac platform and how OSX work together.
Google "xcode tutorials" and start on the first page of links and keep
Also, if you have never done any programming before, you may
want to Google "object oriented programming" as this is the
methodology used these days for programming.
Once you pay the fee and sign up with an Individual Developer Account. use the resources you paid for in the iOS Dev Center: