Granted, this book's strengths do not lie in it's length nor the amount of detail provided. However, the author prefaces his work with telling the reader such, along with his reasoning for writing in this manner: Atheism 101 should only serve as a basic breakdown of the argument(s) atheist often find themselves in when the volatile topic of religion is ever discussed with a theist. Thus, one should only read this book as guide to branching off on their own to independently research certain facets of the debate (though, considering how one-sided this topic is regarding these things called "facts", it really isn't much of a debate)covered in the work.
Overall, I found it neatly organized and very concise in addressing arguments/claims made against atheism.Though, unless you are completely new to the topic of atheism/evolution/etc, then you probably won't learn a great deal of new material. Again, as the author mentions in the book, it really serves as simple, yet useful, pamphlet for concisely summarizing the debate and providing useful retorts should one find themselves in the cross-hairs of a Christian who makes claims similar to the one the author covers