You can find the presentation here (you may need to refresh the page a few times as google docs seems dodgy). Obviously not as good as the real thing but you'll get the idea.
The code examples I used during the presentation can be found here, if you have a browse through these you should have a good idea of the language features.:
I have made a basic skeleton project to get you going, with a Cake file which will automagically compile your CS into JS as you make changes.
Simply clone that and then run
My experience with Coffeescript has been generally very positive. For Springer's innovation week I have built a pretty cool web application entirely with Coffeescript, using Node.js for the server with a MongoDb for persistence. I will blog about that soon but suffice to say being able to do the whole project in one language felt great.