I think you should study whatever you find fun otherwise you would hate chess.
How far can you go without "studying" ?
Sort:
Thanks that's what I have been saying except for positional play in my opinion it's(not really important) but here's my list
Endings
Positional play(how you get the tactics )
Tactics /calculation they go hand and hand
Strategy
Not hanging pieces you can win down a priece even at 2000 elo
Openings
@thrillerfan
Seriously though, you shouldn't want to go very far in chess before studying openings and then endings.
Other way around! Openings should be last.
Endings
Tactics
Positional Play
Calculation
Strategy
Openings
In that order.