IMO the instructions that come with the DCS are marginal at best, and both Barry's book and the OGR Video guide should be included in the purchase of every new MTH DCS.
I strongly disagree with the last premise. I just acquired a new Rev L to do some testing. I would not have done so had I also to bear the cost for Barry's Book and the OGR video.
The new Rev L came with the 5th edition of the DCS manual. It is much thicker and appears to be much better than the first edition 14 years ago.
