There are two major types of peas: green peas, and edible-pod varieties such as sugar snap or snow peas. Regardless of the type, peas grow on vines that need the support of a trellis or netting fitted between two stakes. It is very important to set supports before planting.
There is nothing like picking garden fresh peas from the garden. Peas are of course, best harvested when they are young and tender. Leaving them too long on the vine can turn even the most tender of peas tough. Harvest often and freeze if necessary.