Luis has a second generation Mac Mini and the hard drive crashed. The repair techs want to charge him $350 to replace it. Leo says that's nuts, and he can do it it himself. Macs require special tools to open it up, though, because they use friction to keep things together.
iFixIt is a great site for learning how to do this. They will walk him through the process and even have the proper tools to do the job. Another option is Other World Computing. They offer videos on how to fix his Mac.