The bite
A bite may show as a sharp pull on the rod tip, a slow bend, or a slackening of the line. Do not strike at the first tap. Wait for the rod to load.
With circle hooks, do not strike at all: just lift the rod and wind steadily.
Playing the fish
Keep the rod tip up and apply steady pressure. Let the fish run if it needs to, with the drag set to about a third of your line's breaking strain.
Pump the rod up, then wind down as you lower it, to gain line without letting the fish rest.
Landing it
Use the waves. Wait for a wave to wash the fish up the beach, grab it in the wash and carry it beyond the reach of the water. If you plan to release it, keep it wet and handle it as little as possible.
General guidance only. Conditions, rules and species differ along the coast, so check with local anglers and the current regulations.