Comprehensiveness(covers necessary range of materials)
Readership Level(subject matter presented at appropriate level)
Accuracy(free of factual errors and typos)
Clarity and Readability(clear in content, instructions, exercises and in logic, sequence, flow)
Authorship(author is a recognized expert in subject matter)
Readership Level: ●●●●
Clarity and Readability: ●●●●
This is a good book.