Buy the Tower Key
Speaking of Dark’s Souls III’s Shrine Maiden, you’ll notice that she has a certain Tower Key for sale in her inventory. It costs 20,000 souls, which is very pricey especially early on in the game, but I advise saving up for this key and buying it as soon as you can. This key allows you to unlock the decrepit tower behind Firelink Shrine, and it gives you access to some seriously good loot.
You’ll get access to the invisible crows on the roof of Firelink Shrine, and you’ll be able to trade items with them. Also, you’ll be able to pick up a free Estus shard and an especially useful ring, if you can find the path that leads to it. If you venture up the tower, you’ll find a Fire Keeper Soul. On your way down, you’ll find some armor pieces and a ring. That Tower Key opens up a lot of stuff for you, so be sure to grab it as soon as you can.