BARBED HOOK  ; BARBLESS

First, you need buy a rod, then a reel, also wire or cord.

You need assemble the above items to a rod reel combo or you could buy one directly.

Certainly you need hook, but some time your need BARBLESS HOOK - a hook from which all barbs have been removed when manufactured, filed off or pinched flat against the shaft.

Why fish barbless in the first place? For starters, it’s easier on the fish. Assuming you’re practicing catch and release, backing a barbless hook out of a trout's mouth is far less harmful than the tearing of mouth and jaw tissue which commonly occurs when using barbed hooks. This is the real meaning of the term "ripping lips."
Furthermore, since hook removal is so much easier with barbless hooks, it requires that much less handling of the fish and can often be accomplished without removing the fish from the water. The cumulative effect is better survival rates for trout and other species of fish.

Bar rig is recommanded in most situation:

The bar rig consists of a T-Bar on the mainline, leader attached to the T-Bar with a snapvel, and a weight attached to the end of the mainline.

Different fish need different bait, i.e., salmon need following: