[wjbzone]

Not sure about a book. I use clamps on my parts and program stops to move the clamps.
Check out this setup for cutting the edge for dovetails
WJBzone Puzzle Box

[JC50]

As far as cutting completely around a piece which separates it from the outside. All of the CAM software I've played with has the ability to make 'bridges". Basically they are small areas left uncut between the waste material (which is typically clamped, screwed down, whatever) and the area you have machined. This keeps the finished piece attached to the waste material. Once the piece is completed, you remove the whole piece and use a small saw to cut through the bridges. I use a fine toothed thin blade backsaw. You then sand down the remaining portion of the bridge on the edge of the finished piece.

[DonFrambach]

I found it very helpful to look at some of the build logs here on CNCZone.com. There are also a number of very good ones listed here: CNCRouterParts