What 35 says makes sense. I just had the windows in my coupe (36 ford)installed, then the door windows had to be replaced, crank windows and power windows will often be different sizes, crank windows a touch smaller. My glass guy installed ALL my glass for $300, this is a 5 window. For that kind o money, I will watch the expert work and not have to worry about messing something up.
If you don't have rust or silicone problems, they are not hard to get apart. Look at the door and see what it takes to get the channel loose, the metal that holds the window at the bottom. Then it's mostly a matter of turning the window one way or another to pop it out. One thing most folks tend to do is over-think the process, these cars are made in a factory where speed in assembly is essential, there is usually an easy way to do anything. And most makes of cars will do things the same way, there's not that many ways to skin a cat. Good luck. Dan