Python 3.0

So I started to learn how to /prog/ram with a tutorial (A Byte of Python) for Python 3.0. It was great but suddenly the author decides he can leave out half the introduced concepts and expects the reader to just figure out why the code is written the way it is. I tried changing tutorial, but every other tutorial I have found is for python 2.x.

Should I a) Man up and figure out what he's doing myself
b) be irritating and constantly ask you guys what is going on
or c)  start learning python 2.x instead?

I was thinking c) but I'm scared its gonna be obsolete.

>>1
Python 2.x will continue to be supported for years to come. It's fine to learn both as there is plenty of existing Python 2 code and Python 3 is supposed to fix up some Python 2's inconsistencies.