[jliechti1]

I would recommend this 22-part tutorial on async concepts:

http://krondo.com/?p=1209

It uses Python's Twisted framework. You don't need to use this for your development, but I would recommend working through and understanding the tutorial. Once you get the concepts, you'll be able to apply them to other libraries/concepts.

[brndn]

Very nice and clear. I really like the diagrams on the first page.