My friend invited me to play on these jump based maps. At first, i was skeptical.. I was like what the hell do you have to climb? But it's quite useful, and fun. This teaches you how to jump and strafe and all that stuff. Here are some screenshots. (btw, I searched so this can't be a repost)

This one is wallpaper worthy lol..

I made it to the top!
and again!

Just click Find Servers in CSS, and any map with the xc prefix is a climbing map.
This might be old news to some of you.. but I never knew about this. I thought Counter Strike was just made for killing people..
Anyway.. yeah