The book offers a lot of insight also for a mathematician (or a computer scientist), because the descriptions are arranged by topic, and most examples are complemented with short but clear explanations of the relevant biological applications of the method.

I did catch a few typos, and some computer details may be not absolutely true any more. In some places the phrase "very easy" was used too often, but this is forgivable. This book is a good read, and there is plenty of humor to keep you motivated.