Add more RAM to my MacBook Pro 5,3 I got my MacBook Pro on October 2009  , here are the specifications:


  Processor 2.66 GHz Intel Core 2 Duo
  Memory 4 GB 1067 Mhz DDR3
  Lion 10.7.3
  15-inch, Mid 2009
    Model Identifier: MacBookPro5,3


I want to add more RAM, hopefully add 4 GB more.


What are the required/recommended manufacturers?
Can I do it myself? Any proven guide/tutorial?
You can check out OWC. On the page itself, they have information on the RAM that's suitable for various Mac. They also have a bunch of video tutorial on the installation of RAM for different Mac model.