Reactive Extension (Rx) tutorial that is up to date

Question

I am quite interested in Reactive Extensions but I cannot find an up to date tutorial. I started with Curing the asynchronous blues with the Reactive Extensions for .NET but it

Answer 1

Read this online book line by line (every line) and practice. This is good, I did when I started with Rx.

http://www.introtorx.com/