Upgrading MacBook

In the user manual they will give you instructions.

 

MacBook, MacBook Pro: Replacing the Hard Disk Drive, transferring data to the new HDD​

How to format a new HDD/SSD to install Mac OS X or make a bootable copy onto​

Upgrading RAM in MacBooks and MacBook Pros​

 

ThomasBoss is quite right, but if you haven't got yours handy you can download a PDF version.

 

This should help then, as it contains that information, unless you meant something else:

MacBook, MacBook Pro: Replacing the Hard Disk Drive, transferring data to the new HDD​

Upgrading RAM in MacBooks and MacBook Pros​

 

Buy from other World Computing. They have always impressed me with their prices, service, parts, and shipping speed. I have rarely ever had a problem!

 

I find OWC prices on memory and traditional HDD's a bit expensive. But I do love the service and found the optibay solution as well as external HDD enclosures to be of pretty good quality. If all you are doing is memory and a 500gb HDD, you can find better prices and good service from Newegg or Amazon or even Buy.com. But if you want an SSD, enclosure for your old HDD to use it as a back up or clone and or an optibay solution, I would go OWC, it is what I did, but my memory cam from buy.com as they were $40 cheaper for Kingston ram than anyone else.