presale usually go a few days before general tickets go onsale.
I think it depends, but it seems like months in advance. I already have my tickets for August bought a few months ago. Maybe someone else knows exactly, but thats a rough ballpark.
How far in advance do presale tix usually go on sale?
Go up to the right hand corner with your name put the mouse arrow over it will bring down a list click ticketmaster code copy and paste it into where it asks when ordering tickets. I would get it all copied and and ready to go before tickets go on sale. hope that helped and good luck getting your tickets!