First, don't worry about the missing author/title information (and icon) in iTunes. That's meta data which arrives when you distribute using the App Store.
Your bundle identifier, as sascha says, should be unique and is usually your domain backwards. This needs to match the App Id you created in the Developer Portal.
The Display Name (CFBundleDisplayName) is how it appears on the home screen. One important thing I found about this is that it can be localised, so if your app was called "Beer" in English, it could display as "Birra" in Italian and "Bier" in German.
The mechanical stuff, as long as you follow the instructions, is actually fairly straight forward. I found the key is being prepared. You basically get no notice before your App goes live, and the review process can take any where from a few hours to a few weeks. Make sure you have a website up and running and the ability to accept (and provide) feedback. I just used Blogger.
Unless your app is trivial the real world will find problems that you didn't anticipate and your unhappy users will always be the most vocal, so you need the ability to reply!
My app is Yummy, by the way.
