Step 3: Keyboard and Mouse
I bought one of the more affordable miniature keyboard/mouse combos. I also have a different model with the touchpad on the right side, but I had some problems with that one. It did not always play nicely with my Pi, and the touchpad on the side hindered my typing.
This keyboard is really nice for a few reasons. One is the size. It's small enough to carry around in your pocket. It also has a backlight, and is rechargeable. Did I mention the battery is replaceable? That's not something you see in portable electronics these days.
Anyway, make sure you plug the receiver into your Pi, and charge the keyboard for a few hours before using it for the first time.