I like this pistol squat progression, but i would ad to the last/goal exercise holding a pound plate and doing a front raise with it while performing the pistol squat. This not only adds resistance to the squat movement but it REALLY blasts the core!
Many of us have heard of the Raspberry Pi in the past. It may sound like a food but is anything but. It is a great tool for folks who want to try exciting electronics projects. This infographic from WhoIsHostingThis shows you how to get started with it: