Teaching someone to fish?
I would stay away from the braided lines for two reasons. First, braided lines are a little expensive. Second is the safety factor. With braids, they cut flesh easily. Remember how easy it is to get hung up on something? What do you do? You pull the line, hench with braid you slice a digit to the bone.
Mono is the way to go. I fish some fresh water and salt water. Stren, Trilene Big Game, Sufix are all good brands.
Me personally I like Sufix Tritinum Plus. Comes in several different wights. It has very little memory and holds knots well.