How to Backup my iPhone Contacts, apps, notes, etc to my new MacBook Pro?

Hi, I recently had a problem and lost all the information that was on the Hard Drive of my Dell PC Laptop. My iTunes sync, songs, applications, contacts… everything is gone. I just got a MacBook Pro and I want to backup my iPhone 3G to the iTunes on my new laptop. I have a bunch of applications, contacts, notes, etc on my phone and I don’t want to lose any of them. Is there a way I can backup everything on my new iTunes without losing anything? (mainly the contacts and applications) I appreciate the help!
Thanks in advance :)

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