I don’t want to build it from a kit and i don’t know what parts to get or how to arrange them and which bits to connect to different places. If you know of a good site I could look at please include it in your answer
Well, here’s a good starting point:
You’ll need adobe acrobat to read it. You can customize it, but the key parts are there and the learning is there.
There are also books available, including this one: