Get some Raspberri Pi !
What is Raspberry PI?
RaspberryPi.org for official information
WHY? (in case you haven't read the Wikipedia link above.
This is a very inexpensive way to learn all you can about computers!
Utilities you will eventually need
SD Format Utility - Properly formats the MicroSD card
You MUST MAKE SURE to enable "CHS format size adjustment"
HDRaw Copy Create/Save/Restore images of the MicroSD card
To get started goto RaspberryPi.org download section and follow the "Noobs" instructions
Get Lots of software for your Raspberry Pi from here
NOTE: Updates that come out for the Debian OS and the Raspberry Pi cause changes in the instructions I provide. Sometimes my instructions only need a tweak. Sometimes my instructions are rendered totally useless.