Now you need to install the tools you are going to use to program in Python. First you need a Python IDE (Integrated development environment). In Ubuntu click Applications - Ubuntu software centre. Now type into the search box Idle. Next click on Idle with Python version 2.6 and finally click install. I believe Idle is available on the operating systems.
Once Idle is installed click on Applications - Programming - Idle. What opens is called the Python shell. This is like a calculator, you enter commands and it executes them. Type: print "Hello, World", there your first python program! It might be simple but there you go.