Howdy Jim
Have you already got in mind some idea (even if its only vague at the moment) of what sort of bench you want to use, and for what purposes? Eg a fine cabinet maker will have a different set of priorities than say a chair maker, or guitar maker, or boat builder......The workbench book is fine, I first read it about in 1990 and looked at it once or twice since. It is undoubtdedly a very attractive book to study, but it is also potentially confusing as there are so many ways to create a work bench depending on factors such as budget/what sort of woodwork will it be used for/what level of building skill do you posess already/what materials do you have available etc?? It might help to get a clear idea of your needs and aims for using a bench, and as they say, form follows function.....the design may well sudgest itself. Heres a pic of my recent bench.
http://i102.photobucket.com/albums/m85/ ... dtools.jpg
Its not as gnat's precision as some bench's, but my particular way of working with wood isnt like precision engineering (at the mo anyway, that might change in which case a higher spec bench would be in order). I personally needed a solid heavy bench that I could comfortably plane on, and big enough to do a door or gate on. So I used 6x4, 4x3 and 6x2 stock to build it, with traditional diagonal framing brace's and drawpegg'd mortice and tennon's, a 2 inch thick top with 4x3 "joist's" underneath it. I added an oak bench stop and use 2 forged iron holdfast's as well. I needed a rock like grip on the vice combined with a decent jaw depth so have added a post (leg) vice made with a bench screw from axminister. I can happily clamp a seat blank either on top with the holdfasts or vertical in the vice, and shape it with my adze's with no fear of the bench or the seat blank moving. Also it doesnt flex or "rack" when planing timbers held on top of it. It took me about 8 hours to make (not including flatting the top with my oak jointer which took an afternoon) Total cost something ITRO £40 plus cost of bench screw (about £13)