The first step is to link the two computers. You can use WiFi, but it could be very slow depending on your wifi setup. I prefer an ethernet cable. Cost is about $5.
Next go to Apple Menu / System Preferences / Sharing, and check File Sharing. Do this on both computers. Next on the computer where everything will end up (the Target computer), in the Finder, type Command + k (both together), and in the new window, click on Browse. You will see the name of the other computer (the Source). Connect to it - you will have to enter your password for the source computer. Your computers are now linked.
Here's instructions for iTunes:
If both of them have a FireWire port you could use Target Disk Mode to transfer your files. http://support.apple.com/kb/HT1661
You'll probably need a 400 to 800 cable. MacBooks have FireWire 400, MacBook Pros have FireWire 800.
If the MacBook doesn't have a FireWire port you can take the hard drive out of the MacBook and put it in an external case and plug that into the MacBook Pro.
Here's a cheap SATA external hard drive case on Amazon http://www.amazon.com/Vantec-NexStar-2-5-Inch-External-Enclosure/dp/B002JQNXZC/r ef=pd_cp_pc_0