Professor Thomson's book is well-indexed, with tables of statutes and cases at the front and a subject index at the back. Law textbooks are rarely a good read, but Thomson's structure is logical and he draws attention to key features by (sparing) use of italics and intelligent analysis of the important distinguishing facts.A particular help is provided in the form of flow charts. The importance of these may not be clear, but they help in some complex cases by illustrating schematically the relationship between the parties; thus, they may show that whether A has a contractual relationship with C actually depends upon whether B has such a relationship with C. On p. 72, for example, there is a map which shows the positions of the parties in Bourhill v Young, something essential to understanding the decision.
References appear as footnotes on the page - where I think they are most useful! - and they are generally short, containing nothing that might profitably have been added to the main text.
The student of Scots Law (especially one who, like me, knew nothing of it) will find Thomson's book a helpful guide, logical and concise. While there is something appealing about getting a bigger book for your money, Thomson has packed his pages with a lot of information and its relative brevity is not indicative of slight treatment of the subject.