When I took such courses I suffered due to the fact that I could not code/program. My friends and professors knew how to make 1-D or 2-D grids for heat transfer problems, writing calculus formulas and differential equations in code. How can I learn this? I already know how to solve these problems by hand. Which books are recommended to learn to write in c++ something such as a grid based on nodes in a generic CFD problem for 1D or 2D steady state heat conduction of (for example) a steel rod or something simple like writing the definite integral of f(x)dx from 3 to 5 when f(x) = x^2. Are there any texts out there that teach you how to translate math/physics problems to c++ or making a grid for a CFD problem in c++?