Take plenty of leads and rigs. Once you learn the pier and how to fish the different marks you can fish and lose very little gear but it's a learning curve and newbies will often lose a lot of tackle.
Make sure you have an extra long shock leader on; it's quite a drop from the top of the wall to the sea especially as the tide ebbs towards low and you don't want a fish in the wash at the edge of the pier with a few feet of lighter line still to go before the shockleader.
If you are not getting fish at one mark then move. The pier is a mile long and has loads of marks all along it which will fish at different stages of the tide. Don't automatically think you need to be fishing off the end; it was around this time last year a near double figure cod was caught at the rail end...