know-how

the (technical) knowledge and skill required to do something

• bag of tricks — a supply of ways of accomplishing something
• wisdom, sapience — ability to apply knowledge or experience or understanding or common sense and insight
• method — a way of doing something, esp. a systematic one; implies an orderly logical arrangement (usually in steps)

• ability, power — possession of the qualities (especially mental qualities) required to do something or get something done