I have a beginner type of question. I have no problem out in the field, but have a question as to where to tap into the water. This is on a residental yard, the meter is under the lid in the front lawn. Do we tap in in the front lawn in the ground and set a 36" deep box in around our tap in and shut off, or do we go inside and tap in and then drill hole through foundation wall to get back outside, and then put the backflow in. We did a system 8 years ago but it was commercial and seemed easier for some reason. Where is a good place to learn the irrigation basics as far as tap ins, backflows, and such?