Molich says

On these pages, I offer free advice based on my extensive experience from over 35 years as a usability professional. The categories are:

  • Heuristic evaluation
    How to do a heuristic evaluation;
    About heuristics;
    Molich and Nielsen’s heuristics (1990);
    Nielsen’s heuristics (1994);
    ISO’s dialogue principles (2019)

For further, similar advice, see The testament of a usability professional

Not all my advice is free: Prices.