Getting Food and Water
Wood and water are two factors which will determine if you survive. You can get food in two ways, growing it, and fishing.
Growing your Own Food
To begin growing your own food, you need to craft a planter. Currently, you can only craft a small one.
Craft it and place it, and keep an eye out on your inventory each time you collect a barrel. You might get a potato, or a beet. You can plant these two plants in the small planter, and like all plants, they need fresh water (see below). Give the watered plants time, and stay near them, as seagulls will try and eat them. You will get more plants back than you planted, making this a renewable source of food, albeit time consuming.
You can craft a fishing rod here, which is an incredibly useful item to have. It allows you to cast your rod and catch fish when prompted. However, eating these raw fish is inefficient, and you can improve their hunger satisfaction by cooking them. To do so, you need to craft a grill. That is straightforward, and once you have it crafted you can place your fish upon it. However, you can’t cook something with the power of sheer willpower alone, you need some fire. Placing planks upon the grill will allow it to cook. Give it time, and your fish will be cooked.
Getting Fresh Water
Start by crafting a cup, and a purification station. You can collect saltwater from the ocean whilst holding the cup, and place it on the purification station similar to the grill. Also similar to the grill, you must add planks to it to allow it to boil.