HelpAbout memory editing . [ common questions ]

Hello Guys ,
i got a C++ book and i think it is too good .

i knew many things about c++

but looking to book i couldn't find any thing about opening process or editing memory addresses , etc...

only explaining all about c++ but no thing about memories editing .

and i see that many people here puts codes with memory functions like open proccess handle , etc...

without explaining what does this do , or any thing makes us understand .

so , if any one have a book about memory editing functions , or any resource ..

i'll be thankful for him .

Thanks