Well keith I dont really know if the is a "book" on the ins and outs but dave platt puts out several books and videos for scale how to-s.

also this website http://strictlyscale.com has several good articles online.

as far as differences between sport if your interested here is the main list for it

1. scale takes about 5 times longer to build your plane because of detailing.

2. for each project plan on 80 hrs to 100 hrs of just doing research before you even get to start building

3. planes are usually more expensive because of all the added features and also because most scale projects people tend to do the larger scale aircraft because it is easier to work on.

4. Scale planes are usually a little harder to fly because with all the added features the wingloading is increased.

5. Any plane that has actually flown is a candidate for scale even prototypes as long as they have made at least 1 documented flight

6. an average scale plane of the larger scale will usually run min $2000 though not always the case