Hi,
I start my course to Brighton two weeks ago.
If you want to find a job to Brighton, you are two solutions : to go out to centre for jobs (in the front of Pavilion Royal in town center) and to do window-shopping and give to shopkeepers an advert with your curriculum vitae written in "English"!
You must know that it's difficult to find a job, at first you must to have a good level English (pre-intermediate or intermediate minimum)
Good luck