[iPad] Trying to get all my apps etc onto my new MacBook Pro

 

I have an iPad 2 and have just bought Mac Book Pro, which is fab. I'm trying to get all the apps, photos, music etc from my iPad 2 onto my new MBP. All my stuff is backed up to iTunes on my Windows 7 PC. I've tried signing in to iTunes on my MBP and under File> menu, I go to "Transfer purchases" but it doesn't transfer all my stuff. I've signed up to iCloud but it's not showing up on my new MBP. Can anyone advise what ;m doing wrong?

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