I lived in Brighton for years, it's great for a mid week break
Best pubs for food (central Brighton) :
The Hop Poles (down by the sea front)
http://www.igougo.com/entertainment-reviews-b37035-Brighton-Hop_Poles.html(that says foods under £4, but more like under £10) but great portions, fresh local ingredients , menu changes every day and a friendly buzz
The Basketmakers (North Laines)
http://trustedplaces.com/review/uk/brighton/bar-pub/1r6jx7/the-basketmakers-armsThe Eagle (North Laines) - used to have it's own Bakery
http://www.beerintheevening.com/pubs/s/64/6475/Eagle/BrightonIf you want to go for an amazing (seriously good) gastro pub meal which has a great atmosphere, good booze and is a bit pricer than normal pub food but REALLY good try :
It gets booked instantly for sunday lunch but you can pop in mid week no problem. I had the best xmas meal ever there and we used to work around the corner and it was our friday treat. They source all the food local, so you get lots of seasonal fish and game.
The Sussex Yeoman :
http://www.veggieplaces.co.uk/list_reviews.php?place_id=2459Restaurant wise,
A good cheap thai place that I haven't found a rival for in London :
http://www.spalace.co.uk/index.htmlGreat Chinese (they've really upped their game recently) especially if you like Dim Sum
http://www.chinagarden.name/(Preston street is full of restaurants btw)
Great modern british food :
http://www.coachhousebrighton.com/If you like sushi Moshi moshi has no rival (no california rolls
)
http://www.moshimoshi.co.uk/Best Fish and Chips :
Bankers :
http://www.bankersrestaurant.co.uk/Get 6 bagels from Bagelman for £2 to bring home, they're ace.
http://www.bagelman.co.uk/Get a milkshake from Shakeaway (I used to work there)
http://www.shakeaway.com/subsites/uk/homepage.htmYou shouldn't need to drive around Brighton, bus services are excellent and it's small enough to walk. Just park the car and explore on foot
Also, if you're tempted by mexican, then there's a decent small lunch place
http://trustedplaces.com/review/uk/brighton/takeaway/1k12j7b/el-tacoBut chimichanga and dig in the ribs are both useless
Have fun
I've tried just about every restaurant in Brighton, so let me know if you fancy any particular type of food