I bought a bunch of assembly/MASM books from the 90s recently, if that helps. Writing assembly is a skill that atrophies so quickly without constant exercise,

I bought a bunch of assembly/MASM books from the 90s recently, if that helps. Writing assembly is a skill that atrophies so quickly without constant exercise, so once you spool up to an acceptable level of assembly productivity, you really need to make a conscious effort keep practicing to maintain it. If I go for a couple of weeks, I’ll come back and be like “wait, how do I check if this is a NULL pointer again?”. The Computer Archtecture books are good, you can pick up 2nd hand copies of older versions for cheap. Intel and AMD manuals are good, too.