Interested in dabbling with python, I found this very helpful website.
What I like about Codeacademy Labs is being able to dabble in python, ruby and java script without installing anything new on your machine. (Assuming you have adobe's flash player already installed.)
Here's what "CAL" has to say about themselves:
Here's what you will see when you first go to the website:
Three great places to start, but there is a lot more that can be learned from CAL.
HTML, CSS, jQuery, PHP, and more are available. To see a more comprehensive list, go here: http://www.codecademy.com/learn
One of the other reasons I like CAL is in their mission statement:
"We do not want to open up universities. We want to open up knowledge. Everyone knows something they can teach someone else and we want to help them do it. Our community has created tens of thousands of courses and taken millions of courses. At this point, more than a billion lines of code have been submitted to Codecademy.
Education is broken. Come help us build the education the world deserves." -http://www.codecademy.com/about
Lofty goals, but I like the idea. There is much more to their mission statement, so if you are curious, follow the link directly above this sentence.
If you are interested in learning a new computer language, give Codeacademy Labs a try.