If you are looking to add RAM or upgrade the hard drive on your Mac, check out IFixIt.com. I have never found more detailed, free, online guides for such a wide range of Mac hardware. Following their well-photographed, how-to guide, I changed out the hard drive on my MacBook Pro in a few minutes this morning. IFixIt sells all the parts and tools you’ll need to repair or upgrade your Mac or iPod.

These guys have personality. Curious about what’s inside an iPhone 3G? Just prior to the worldwide launch, they flew from California to New Zealand to be among the first in the world to buy one. And then they disassembled it.