The Raspberry Pi doesn't exist because products take time to develop. However, the progress we have seen indicates that it is on track to be launched in November, exactly when they said it would be.
4 karma · joined April 17, 2011
Try Mark Pilgrim's Dive Into Python. It's free online, and python is one of the better introductory languages: http://diveintopython.org/toc/index.html
Aside from that, search stackoverflow for variations of your question - it's been answered lots before!