Please note that, the pronouns he,she and it are the same in Turkish, which is "O".
Not to be confused with "ben de", or "sen de" which mean "me too (also)", and "you too (also)" respectively. The pronounciations are identical, so pay attention to context.
onlar: those (away from both of them) The difference between "şu" and "o" can be hard to understand for the foreign people. Our suggestion is to use "o". Native speakers use "şu" seldom. "O" can replace "şu" in every situation, bu do not try the reverse because "şu" cannot always replace "o".
Typically you can distinguish by distance. Items within an arms reach that you're not interacting with are "şu", but items any farther away are "o".