Do you think is worth trying Python 2.6 or maybe (asumming it's going to take a while for me, and maybe by that time will be stable) better focus on the new Python 3k?
That's a good question. I want to say start with python 2.6 and get the fundamentals under your belt, but at the same time I picked up PHP right in the middle of the transition period to PHP4. That said, my best advice would be to start with 3 and have all the new concepts right away.