Steve Makofsky has written a book on Pocket PC Network Programming, if you are writing applications that need to connect with other devices then this would seem to be a pretty useful book (I've not read it, but have a copy on the way, so will read and post a review). Amazon are running a special offer to get Steve's book, and Doug Bolings Programming Windows CE 3rd Edition combined - seems like a good deal...

Rush out and get a copy of Steve's book right now !!  - or better still, stay in and order on Amazon.

- Mike