Problem hacking this game ..

Two things, how to approach reverse engineering and a concrete problem.

One.
How do you excel at this subject.. course of learning, cracking the curve so to speak, tutorials, what? What have been your course of learning, background, motivation etc.

Two.
Im writing a bot for a game.
Tools I use is ollydbg with hidedbg plugin and memoryhackingsoftware by l.spiro (awsome tool)
Different characters will appear on screen from time to time, titled their 'names'
I can find these names in memory with hackmem, however it is dynamic memory, ie. they will not apear in the same exact spot in memory, typically somewhere
in the range of 0A000000 to 0CFFFFFF. There *is* a pattern, if i search the entire region of memory i can find these names and record them,
however readProcessMemory is way too slow, this should take a max of 100ms.
So I start the game with olly, i find the name in memory with hackmem, i put a breakpoint on memory access in olly.. it breaks.. so far so good.
I step around a bit and notice the name in question has been pushed on the stack (the memory location of the name) ... Excellent i think...
Now i return to memhack to inspect this piece of memory in the hexviewer (00120000 memory area) but i do NOT see the same data as i see in olly.
WHY is that ? Even though the game is paused in the debugger this data seems to by dynamic and change whenever i move the mouse! Why is that ?
Stupid questions im sure ... ?