The seafront doesn't require much directing, since it is a straight road that stretches many kilometers along the shore, so we'll just point out things that are worth seeing and doing here.
If you position yourself at the pier, facing out to sea, and take a stroll to the right, you'll first spot trampolines, then the Brighton donut, which is next to a bar in a brilliant location to watch the sea. Further along you've got an old-time arcade and carousel, followed by Coalition, which is one of many late night seafront clubs along the coast.
On the other side of the Pier (your left if you're facing the Pier), you've got the Sea Life centre, which is hard to miss, plus two crazy golf courses (one of which is right near the pier). In summer you might catch the Brighton Big Screen, which shows films and shows throughout the summer (check it out on our annual events
page if you're interested).
As you keep walking along, you'll pass the new i360 tower if you fancy a sky-high view, along with places for volleyball, basketball, paddling and, eventually, you'll reach Hove Lawns, followed by many many beach huts - it's a wonderful and easy walk on a nice day and the lawns are a great place to set up a picnic if you find pebbles a bit uncomfortable!
If you follow the road east (left facing the pier) you'll come across a sports venue and the other crazy golf course, as well as the tiny Volks electric railway, which, for a couple of quid, you can ride all the way to the Marina. If you make the walk on foot, you'll probably notice a large embankment of pebbles as you get closer to the Marina, which is the curtain that hides the naturist beach area.
Eventually you'll reach the Marina, which, as well as having many boat trips and fishing trips, has a casino, bowling alley and outlet mall, combined with some well priced places to eat.
You can actually continue east out of the Marina on the Undercliff Walk, which will eventually take you to Rottingdean and, if you walk for about 30miles, Eastbourne! We wouldn't recommend going that far, but if you're a fan of cliffs, coasts and sea air, it's worth a walk until you get tired. There are bus stops dotted along the road, so it's easy enough to get the bus back.