We used this textbook in my Forensic Molecular Biology class. It's a tiny bit out-of-date with numbers and such here and there, but it is very readable. Concepts are explained quite clearly and thoroughly. I think it was a really good choice for the class. The questions at the end of the chapter are usually great review, but occasionally there is one that isn't addressed well in the chapter. The questions also sometimes differ from the questions at the end of the corresponding slide presentations on STRBase. If you're a student, just keep that in mind.