I took calculus in the past and wanted something to bring my mind back to it.  This was a perfect product.  Not as many proofs as there are practical problems, with step by step solutions with alternatives.  If you want something that goes in depth proving the processes, you might want another book with this one.  This one helps in the actual grunt work of solving problems.  Heavy on trigonometric functions, exponents, and natural logs which others are missing.