The artist’s tools do what the artist tells them to do. If you want to know the difference between Blender Internal and Cycles, do two renders, one in Blender Internal, the other in Cycles, and look at them.
Mental Ray, Maya, 3dsMax, lighting, texturing, uv’s… none of that changes the look. The artist changes the look. You want to ask questions? Ask Blender your questions. You want to learn more about Blender, start using it.
You don’t understand the UV editor. But the UV editor was explained, in great detail, with examples, in earlier posts. You still didn’t get it. Why do you think reading yet more about the UV editor will make it clear? What will make it clear is you, using the UV editor for many different texturing projects until it clicks. You will not get that out of books, no matter how many books you read.
This is the Lighting and Rendering Support forum. This is where your questions about Lighting and Rendering are answered. Do you have a question about your Lighting project? no. Do you have a question about a render you are working on? no. Why not? Because you don’t seem to have a lighting or rendering project to ask questions about. This might as well be in Off Topic Chat.
Look, DOMO79, your first projects are going to be pretty crude, and there will be things you don’t understand. This is not a big deal, it is part of the learning curve everyone goes through. Everyone. So do your first projects, post them, get some advice on how to improve them, and move on. Your second projects will be better. Notice I said projects, plural. Every time you take on a new aspect of Blender, you are doing a new first project, and it will suck. Why? Because there are always going to be techniques and methods you don’t know the first time you use a tool, that you can only learn by using it.
Seriously, if you spent half the time actually working on projects that you seem to spend agonizing over whether you are doing things the ‘right’ way and not wasting your precious time, you’d be miles ahead of where you are now.