Howto on callbacks, queues and good design patterns

[Michael Bernhard Arp Sørensen]

Hi there.

As a newbie, I need to learn about callbacks and queues(syntax and 
examples) working together.

At work we talk a lot about design patterns. Does any of you know a good 
  site about that or any good books from Amazon?

I started using python at work in the summer 2007. I think I know the 
stuff, but I need to expand my understanding of the more complex 
programming techniques.

Thanks in advance.

/Karneevor