I have the Frank Frame ‘How to Pass’ book and it also is light on content. There are uses of ‘program’ and ‘programme’ in the same paragraph with the same meaning, mistakes in code, botched screenshots and many tasks are too contrived even for raw novices. About 50% of the book is programming and is not very well explained (about 60 pages). 2 and a half pages are on databases, 3 pages on web pages, 3 pages on scripting and mark-up languages then from there it’s a paragraph per item in the assessment specification document.
As you said, it’s only a guide and not a comprehensive text book, but I wouldn’t hand it out to pupils. I feel their own notes would be much more useful to them, coupled with copies of all presentations.