Prior to heading out to sea, you need to decide if you want to go fishing on a private boat or a fishing charter. Unless you know someone with a boat and experience sailing into the ocean, you will most likely opt for the latter choice. Private charters can sometimes be expensive, so shop around for the most affordable options. Check reviews online to make sure the company is reliable and fun.
You will also need to decide upon which type of deep sea fishing trip is best for you. Normally, deep sea fishing companies offer half-day and full-day trips. If you are a beginner, you will probably want to opt for the shorter trip, as a full day out at sea can be quite a long time. Note that many people get sea sick, especially on deep sea fishing boats, so go with the shortest possible trip if there is a chance you could fall prey to sea sickness. If you are booking your deep sea fishing trip as part of a vacation, try to do it as soon as possible. If you wait until you arrive, there is a good chance there will be no available spots.
Before the day of the trip arrives, prepare yourself. Take sunblock, food, drinks, Dramamine in case you get sick at sea, sunglasses, a first aid kit, comfortable clothing, and so on. If you are going on a private boat, you will also need to take bait. This should be provided for you if you are going as part of a fishing charter. If you need to take your own bait, make sure you investigate the type of fish and sharks you hope to catch. Different fish prefer different baits.
Once out to sea, use patience while fishing. There is a good chance you will get your line tangled at some point, especially if you are on a fishing charter. Keep your calm, waiting for the boat captains to help you get fishing again. Also exercise patience while your bait is in the water. A lot of people get impatient and continually reel in their line, but this may not be a good idea. Certain fish prefer moving bait, but most do not care. Usually, you want your bait in the water as often as possible.
Lastly, be ready for a fight if you hook a fish. Even small deep sea fish are incredibly strong, so it will take some time to reel it in. Let your rod do the work (as opposed to the reel), and let the fish tire itself out before you bring it onto the boat.