I have dabbled in programming since the 1970's, starting out with Radio Shack's Color Computer and their guide to Basic Programming. Over the years I have bought a bookshelf full of programming books and guides and this is one of the best ones I have seen.
It is written in great detail and every new concept and line of code is explained in an interesting, easy to grasp way. Program examples are for the most part based on progarmming games and "fun" type projects to keep you interested, but the book also gets into more serious topics as well.
The book teaches the Pocket C language. Pocket C is not standard ANSI C. I've seen a few negative comments to that effect, but I really don't consider it a negative. Pocket C is written specifically for use on Palms and has many built in functions that greatly simplify writing the programs. it is also a very compact and easy to understand language. Although in itself, it is not a "Visual" environment, there are several third party form design tools available when you prograss to the point of needing them. In my opinion you are better off concentrating on learning the programming syntax and commands first when learning a new language, or learning to program for the first time, rather than starting out with an interface that atttempts to do so many things for you. You need to have a good enough understanding of the nuts and bolts of your chosen programming language to do the coding manually, even if later on you use a more advanced rapid application development environment. This book does that..it gives you a good grounding in the basic concepts of programming that apply to Pocket C as well as whatever other language you might choose to learn.
Even if you choose to migrate to another language like C++, the concepts you learn with Pocket C will still be valid, and the language is similar enough that you will have an easier time learning that if you started out there to begin with.
I would highly recommend getting the Desktop edition of Pocket C from Orbworks and the Palm Emulator from Palm to write and test you programs. You will need the registered version of the Desktop edition (called PDE) pretty quickly into the book as the demo will only create projects of a very limited size.
The book comes with limited or demo versions of Pocket C, the pde and several third party products such as form builders, etc. The Cd also has the Palm Emulator, but due to licensing restrictions does not include the necessary ROM files for it to operate. These can be downloaded free from Palm by filling out a non disclosure agreement and signing up as a developer, which is also free. This is the case with ALL programming systems for Palm, not just this one.
If you are going to order the book, you need to go ahead and fill out the forms on the Palm developers website as it takes a day or two for them to approve your NDA agreement and give you access to the ROM files.
It would probably also be wise to check the net for new versions of any of the software included on the Cd with the book as new versions are released often and the CD's tend to get "stale" pretty quick.
As in most programming guides, I have found a couple of minor typos, but nothing serious enough to create a real problem.
I would suggest that you actually type in the programming examples in the book, as opposed to loading the source code from the CD...even though your fingers will get a little workout, it is probably the best way to commit the language to your memory.
To sum it up, I would recommend this and any of the other "Absolute Beginners" guides to programming to any programming beginner, or even somewhat experienced programmer learning a new language.