I think the clue here might be in your username.
Following this advice would waste around 10-15 minutes valuable drinking time and take you away from where most of the good pubs are.
The I'd echo the advice saying to stick around North Laine - The Albert, North Laine, Basketmakers, Great Eastern, George, Office all good pubs with decent beer selections and other specialities.
I'd advise you have a burger at either Troll's Pantry (which is in the Hobgoblin pub - same area)...
What are you looking for?
Are you ale or lager drinkers?
Are you on the pull?
What music do you like?
Are you looking for clubs as well as pubs?
Brighton's pubs and clubs cater for a lot of different tastes, it's difficult to say without a little more information.