A new Raspberry Pi expansion board is available by the designer of the Gertboard called the GertDuino. The GertDuino is a GPIO add-on board that works like an Ardino-UNO board plus offers extra features.
TNC-Pi is a terminal node controller device, GPIO add-on board used by amateur radio operators to participate in AX.25 packet radio networks.
Get started with a Raspberry Pi the easy way. New out of the Box Software or NOOBS is a utility to make installing Operating Systems for the Raspberry Pi simpler for Raspberry Pi beginners but also can be used as a recovery system useful for more advanced users.