How are you doing? I'm gald to see your name again here.
Microskill is a simple word used in the field in English Education. I'm not sure if it is also a word with other fields, though. As far as I know, the prefix 'micr or micro-' derived from Latin or Greek words menas "small or tiny." I think of course you knew it. So, 'microskills' simply menas skills categorized
I see. Thank you for the information. I googled "microskills of reading skills" and "microskills for reading skills" and found no site uses either of these phrases. The phrase form of "---skills of/for --- skills" seems a bit weird to me. Twenty-three pages are using "microskills for reading comprehension" but none uses "microskills of reading comprehension"
"Microskills for reading comprehension" seems a fixed phrase used as a technical term in language education. So maybe it would be better not to say "microskills of reading comprehension".
But in other cases, I feel, English speakers use "skills of something" and "skills for something" almost interchangeably, though the former seems a bit commoner. Results of