Here's a problem as I see it. Some very new fishermen, new to saltwater fishing, at least, may not have a frame of reference from which to build enough of a knowledge base to be successful on the first few days of fishing. It's just as natural for them to want to be immediately successful as it is for experienced fishermen to tell them "watch what others do and ask questions".
So here's my advice to them - Begin by targeting the fish that are "in", or the ones being caught from that specific pier during that week. Use this site to reach a general determination:
<h1>North West Florida Pier Fishing</h1> A fisherman has to target a specific fish or fishES, depending on what's biting and WHAT they eat/strike.
What do you need to fish from the pier? A pier cart is nice, but it may be impractical to the novice. Why don't you try this - Get a rolling ice chest that has a long handle (or one that extends). Bungee-chord your tackle box to the ice chest after half-filling it with ice. In your tackle box you'll need a fillet knife, long-nosed pliers with a wire cutting feature, a smaller knife, fluorocarbon leader (about 12 - 14 lbs) extra line, single-strand wire (for fishing for kings, spanish and blues) , hooks - treble, J-shaped and circle hooks, Gotcha lures (for Spanish, primarily) egg sinkers, barrell swivels (black). You should get a measuring tape and keep it in the box to make sure that when you put your catch on ice, it's legal.
Before coming to the pier, I'd stop by a bait shop and get a couple of dozen live shrimp, mostly because everything eats shrimp! Utilize a Carolina rig (go to YouTube or search here for directions).
Look at WHERE other fishermen locate themselves on the pier. You won't usually see King Mackerel fishermen fishing in the surf. Likewise, fishermen targeting near-shore species (whiting, flounder, black drum, pompano) won't usually fish in deep water. So go where the fish are!
Don't fish with a glob of squid. Ever. They may want to sell you squid, but there are better baits. You spend hundreds getting to the beach and on accomodations and food - don't use cheap bait.
Get to the pier early. Many times, a great run takes place at first light and it's over before some fishermen get out of bed!
There are a million opinions, ideas and suggestions, which is why there's really no one good simple answer to "what do I need to know to catch fish" from the pier. Do as much research as you can on the various species, see if there are tutorials on YouTube, check out this forum for previous discussions, ask questions from other fishermen on the pier, observe them as they fish, know what's biting from regional websites, from pier personnel and from the bait shop.
Most of all, get as much knowledge as you can, as quickly as possible and you'll find that success breeds success.