This work provides a missing manual needed to understand permanent magnets (also known as "hard" magnets), the only source of "magnetic induction field B" (units of teslas), often called the magnetic field, that students are familiar with when they confront magnetic force acting on moving charges. Students see this magnetic force in two forms. The natural language to describe permanent magnets includes magnetic poles "q[subscript]m" (units of ampere-meters) and the magnetic field (units of amperes per meter) "H" that poles produce. It is the primary purpose of this paper to: (1) give the rules to compute "H" and "B" due to permanent magnets and apply them to a few important situations; and (2) give examples of how to replace often-difficult-to-analyze electric current circuits by more easily analyzed magnets. A sidebar presents evidence that, despite their conceptual and even practical utility, magnetic poles are not real.