The aim is to provide a synoptic view of the epistemic landscape in respect of epistemic actions, abilities and knowing how. The resulting view consists of the following propositions: (1) knowledge-by-acquaintance cannot be reduced to propositional knowledge or to knowing-how or some combination of these; the same point holds for propositional knowledge in relation to knowledge-by-acquaintance and knowing-how, and to knowing-how in relation to knowledge-by-acquaintance and propositional knowledge; (2) These categories of knowledge are, nevertheless, interdependent in a number of senses; (3) Abilities are not the same thing as know-how; (4) Epistemic actions need to be distinguished from behavioral actions; (5) Judgements are epistemic actio...