Sounds like you are trying to get ahead of yourself 😊 Slow down, you only just started fishing :)

I assume you mean Australian Salmon?

Salmon are usually caught off beaches and rocky headlands. They will take shiny metal lures with a fast retrieve. They will take live baits under a float. They will take whole or cut pilchard. They will even take soft plastics that are allowed to ebb and flow in the current using a channel sinker. They will sometimes come into rivers and bays, but usually stay near open water.

Snapper are very much like bream. Snapper are often a by-catch when fishing for mullaway on beaches. They will take cut pilchard and soft plastics. But the all time favorite for snapper is baby octopus. But if you want to target snapper, you first need a boat. Sure, they can be caught land based and often are. With only a few days under your belt, I don't think you are ready to be targeting snapper...give it at least a week :)

Hook size ? There is an old saying a small hook will catch a big fish but a big hook will not catch a small fish. What I do, is match my bait (or lure) to the fish I am after and then match the hook to the bait. But that is me.

What do you mean by "triple hook". Do you mean a treble or do you mean a triple gang?