Stant Foster is one of the veteran tinter that travels the word training people I don't know if he still does , but he had a training course available to buy on his web site. I myself learned the hard way watching you tube practicing an wasting roll after roll express window films can offer a wide range of window film from very cheap to practice to top quality film also if you call them they are very friendly an helpful. for the temperature of installation when it is too cold the film takes a lot longer to dry and it can peel off the window that is why on that kind of cold climate some tinters use heat lamps on the outside of the car to help it set a little bit .you may want to watch this vid. that shows the heat lamp.