lets say I wanted to learn how to install a system for residential. I have the design knowledge. Is it ok to ask established businesses if I can come watch an installation just to get the basics of it.
If you want to fly out to Maryland , work for free for a month, I will teach you almost everything you need to know. Actually I went to Florida 20 or so years ago and worked for a contractor for 2 months over the winter , I learned the basics , I am still learning and refining my skills .