To supplement this comment, How to Solve It by Polya is a nice little handbook on the education of mathematics. I&#x27;m reading through this at the moment and I&#x27;ve learned quite a bit. It&#x27;s especially useful to see how I have unknowingly applied some heuristic to a problem I&#x27;ve solved in the past.<p>As a side note, I&#x27;m finding both Calculus Made Easy and Concrete Mathematics incredibly useful. Thanks for the suggestions.