Thank you for this. I have been curious about Lisp for awhile now but never really took time out of my day to look at it more in depth. This looks like it will get me started.

Another good resource for the same is Practical Common Lisp by Peter Seibel [http://gigamonkeys.com/book/]. Like these lectures its free to read online :-)

[Edited for spelling]

Thank you! This is a perfect post-introduction resource.

I also recommend this one: http://www.lisperati.com/casting.html

Can anyone familiar with lisp, tell us, how good this is ?

It's a decent introduction. If you're aware how functional languages work, you might get more out of following a tutorial targeted towards more 'advanced' users. However, these videos aren't very long, so I'm sure you won't lose a lot of time by watching them.

These ray tracing videos may be more targeted towards 'advanced' users. However, I haven't seen the full videos. http://home.in.tum.de/~lehmanna/lisp-tutorial.html

The consensus among the yobos is that it's "OK".