Good literature about python twisted

[gelonida]

Hi,

Just wanted to learn more about python twisted and wanted to buy the
O'Reilly book.

However I noticed, that the book is from 2005.


Is this book still worth it or is there anything better to learn about
twisted.

I though about buying a paper book in order to be able to read in in
the train.

If there is however a reall nice online document, then I wouldn't
object of not buying a book at all.


Thanks in advance for any suggestions