I have just started to get into this area, looks as if this is not an easy do it yourself teaching thing,lots of things to consider to be good.
I am breaking in just as repair and maint. of existing
Systems, This in it's self is a good income producer.
But if you are determined to jump in, the library has many good books, and rain bird has a leaflet that will walk you through the set up,also the best place to look is on the web. whatever you decide , goodluck.