Cheat Engine

[Doctor Death]

What is

a base address
a base register
the meaning of [register+0xDEAD] is it like, getting the value of register but adding 0xDEAD to it?
a pointer offset. it seems like it's just adding more to the pointer's value

how do you:

use the break pointer?

I heard it's good for creating exploits.

[hhhuut]

1) Usually a static address
2) What? There are the standard register for x86 and x64, but I don't really know what you mean by that.
3) the "+DEAD" part is what is called an offset. So if your register ist 2000 (Hex) and your offset is 1234 (Hex), then after performing the term "register+offset" you'd get the value 3234 (Hex).
The brackets just mean you want to take the value, not the address itself. So on the term "[register+DEAD]": You first take the register-value, add the offset value and then you read from address you just calculated.
4) see point 3

If you want to create trainers/cheats I'd recommend you to watch some videos, do the CE-Tutorial and learn assembler, I think then the whole subject with registers and so on will become clear.

So far...

[++METHOS]

When I used the term base register, I was simply meaning to lea (load effective address) of the register that carried your base address in to a custom symbol.