FearLess Cheat Engine

So i searched for a while, and i can't find any examples of how to deal with addresses like 02A6B424:4. What is that colon? Why does cheat engine skip it when i add the address to cheat table? I noticed when address like that appearss it broke my c++ code becuase when i trying to use ReadProcessMemory on 02A6B424, i got weird huge values instead of value that cheat engine gives me. How to deal with that kind of stuff? Is there any good tutorial explaining that?

When you're searching with "All" Value Type, it will show next to the address which type it is. In this case the 4 being a 4 bytes.
It's not a part of the address itself, so just ignore it.