There is, by now, some variety of textbooks to choose from, covering quantum computing and quantum information;-- the output of research papers has been explosive since Peter Shor discovered his algorithm. Two books stand out as being especially ready for use in the class room, the one by Nielsen-Chuang, and the present one by Hirvensalo. The first covers more ground in physics (theory), and has a bigger selection of exercises;-- the second stresses the math and the CS side of the subject;-- it has more worked examples. It can be readily used in the classroom in a one semester course, and it will go over well with students in both math and in CS. The level is even, and a beginning student can progress in steps, following the text, and doing the exercises.