How do I start?

Umm, I don't know where to go to start doing the challenges. Are they free or do you have to make a donation with paypal. I don't see a link anywhere to the actual problems. Can someone help, thanks!

Well, here is the first riddle.
http://www.pythonchallenge.com/pc/def/0.html

(And it isn't really hard to find it, is it? Just go to www.pythonchallenge.com and click..)

And they are free.

Ok, thanks, but I clicked on every pixel and it doesn't work for me. Oh well, I'll just use the link. Thanks!

Well, here is the first riddle.
http://www.pythonchallenge.com/pc/def/0.html

(And it isn't really hard to find it, is it? Just go to www.pythonchallenge.com and click..)

And they are free.

Nice. I'll start with "much large"

I'm having serious difficulty trying to change the url address. In fact I can't even find it. What am i doing wrong?