Self-Help Homology Tutorial for the Simple(x)-Minded

I am a little booklet. Besides being fabulous, my main job is to explain some fundamental ideas about simplicial complexes and Betti numbers. If you do not know what those things are, then I am the booklet for you! My intended audience is people with some college-level mathematical training but who have never taken topology. I might be useful if you want to learn a little bit about a tool from topological data analysis (TDA) called persistent homology.