Tickets for some events are available to book before they're released to the general public. You usually need a code + a secure link which is sent out by the artist or the event producer. These code and link are usually sent to exclusive members of fan clubs or customers of a particular company.
Presales are usually sold from a separate allocation of seats, which may not be the same as the tickets being released to the general public. This gives you the chance to book before the general release, which often means there are fewer people competing for the pool of tickets available. But this doesn't necessarily guarantee you to get better seats. When an event's really popular, how close you are to the stage sometimes comes down to the luck of the draw and sometimes you might find that you get tickets closer to the stage during the general sale.
Please note that if you are unable to book in a presale that tickets are always limited availability and having access to the presale never guarantees tickets. Our best advice would be to try and book during the general sale. Please read our helpful booking tips by clicking here.