Hi All, I have a MacBook that's a couple of years old. I'm running out of space on my hard drive and I'd like to have more space without having to plug in to a portable hard disk. Can I buy and install more memory myself, or is that more than a newbie should deal with? (I'm very familiar with the software on my computer but have absolutely no experience with my hardware). If it can be installed straightforwardly, what should I buy? Thanks!