If you are looking for specific solutions, they are usually organized by these core chapters:
Patankar’s original text includes appendices with Fortran code for the SIMPLER algorithm. The best "solution" to the text is to run this code. A modern educational supplement should include Python or MATLAB translations of this Fortran code. Running a 2D cavity flow simulation provides more insight than reading a manual’s final answer. If you are looking for specific solutions, they