Youve got a lot to learn. Dont take it like its a huge cement wall to get over. Engines are actually a simple conept. Its like algebra, you can do it all day in your sleep once you UNDERSTAND it. Its the same way with motors.
All I can say is sift through the threads and click on anything you dont understand and read the posts. Sure, it all looks like its written in German at first. But once you get the idea, youll know what righ questions youll need to ask. I promise that once you can figure that out, most of your answers are already written on the forum.
I have stuf already laye dout for you.
Start here
Then here
Also here.
Lastly here.
That should get you started.