This is a really solid review/overview of math for sciences, particularly physics (or engineering.) Basically, if you are a sophomore or junior undergraduate, this is all the math you have probably already (supposedly) learned, in a somewhat condensed form. If you have never done e.g. multiple integrals, Fourier series or transforms, or differential equations, this is probably not the book for you. I think it would be really hard to learn all those things, from the ground up, from this book. If, however, you have been through a set of calculus courses up through mutlivariable and differential eqs, then this is a great book precisely because it gives only quick quick coverage to theory and to basic breadth, and instead focuses on applying all that math you have been learning to prepare you to move through e.g. junior and senior level physics courses.
I give four stars because there are places where I did feel additional explanation -or additional worked examples- would be helpful. Like many books, it includes harder problems towards the end of each section: a few more worked examples of this relative complexity would make this a five star book. My two cents, anyway.