Chernarus , cheat engine will get you no where. its shite mate , learn some c and asm.
We can't really hold your hand without the same game.exe and operating system you use.
The step is learning how to at-least read ASM (assembler) language. I grabbed my old college asm programming textbook and registers are explained on page 4.
ASM can be hard to grasp without a concept of programming logic, functions, data types, loops, stack and all the other fun stuff that comes with programming, though you can try.
Don't let this turn you off right away... You know that "memory view" in cheat engine where you see the giant list of "WTF cODE", that's the live asm stack, those are all the instructions and functions (unless in external dll) of the program.
if you want to get your feet wet with an easy to learn/use programming language, get VisualBasic6 on a xp computer. Its drag/drop and you'll make your first program in a matter of minutes, from there you can learn loops, how function calls work, data types and all this will help you with logic.
Good luck,
-Sym