Firstly, please take the time to try to type properly. We can forgive some mistakes, but when a post that long (I'm specifically talking about reply #9) doesn't contain a single punctuation mark it makes it difficult to read and respond to properly.
I'm not asking all of the code just the process of how a engine should work like what files should be loaded and some of the math
just need to know the math and the syntax
You load whatever files you need. You use whatever maths is required for your game. The syntax will be the syntax of whatever programming language you are using. If you had more specific questions (i.e. "I'm trying to implement [some functionality] using [some programming language] and [some particular engine], here's what I've tried, what am I doing wrong?" or even "I'm trying to do [some specific task] with [some engine] and have no idea how to start, help!") we could help you, but at the moment these questions are just so broad and general that they're completely meaningless and impossible to answer.
The fact that you're asking this very clearly shows that you have not yet learned the basics properly, and if we give you code samples or random instructions on the usage of an engine it will not be helpful to you. You really should try actually making a simple 2d game -- just a game of Pong, with simple blocks and a circle for graphics so not having art isn't a concern -- but without using existing code.
Pong is a really simple game, but it contains a lot of the basics you'll need for a top-quality MMOG: a game loop, input handling, basic collision detection and response, etc. If you can't make Pong, you can't make your MMO. I know it sounds silly. I know it might not be exciting to make Pong. But honestly, if you can't do that, you aren't ready for the things you're asking for, and it'll just be a lot of technical gibberish you're unable to understand.
Start from the basics.
Try to make Pong. If you do it properly you'll actually have a much better understanding of what to do next. You can't just skip over this basic stuff because you think you would be able to do it if you tried -- by actually doing it you'll learn the answers to some of your questions, as well as having a better idea of what specific questions you should ask next.