Thanks for the note. It hasn't yet hit the shelves of The Book Depository in the UK (Free postage worldwide) but shouldn't be too long. I have a Rainbow Optics Star Spectroscope that I need to do something about using so this book could be useful.
If you're starting spectroscopy from "ground zero" and intend doing "spectroscopy 101" with a Star Analyser or Rainbow Optics grating, then the "Grating Spectroscopes - How to use them." would be a better choice.
If you want to read more on diffraction gratings, prisms and designing and building spectroscopes, then the other book is better.
The easiest way is to buy a Paton-Hawksley Star Analyser grating and the book mentioned below.
The detail and resolution you can get will very much depend on the equipment you use (standard camera/ lenses or through the telescope with a webcam/ CCD)
Getting started i.e. obtaining a spectrum, is relativity easy; getting good spectra and being able to process them to show all the hidden detail...is a bit more difficult!