Are you asking about histology and pathology courses in medical school? They require almost zero technical ability. Many places don't even require you to use a microscope these days; they just give you computer files of the slides. The most important thing for pre-clinical path exams is learning and remembering key words that go with certain path findings (which are often pretty obscure and not obviously linked to the diseases they characterize) like "Orphan Annie" eyes, foot process effacement, Psammoma bodies, fried-egg cells, etc. and being able to recognize them and match them to their associated pathologies.
They are very different from labs in undergrad chemistry or biology courses because (at least in my experience) you don't actually do anything in the "labs." There are no experiments and you don't have to fix tissue or do any staining or anything.