Trade old, well-loved Nioh 3 weapons for in-shrine credit
Pcgamer: Compared to every other soulslike I've played, Nioh 3 really just throws loot at you, Diablo-style. It's not so much about finding a rare, one-of-a-kind sword or helmet in a cave, so much as it's about hunting for ever-bigger stats on generic gear, and you're encouraged to routinely swap your equipment for something shiny and new.
What you do with all your old, potentially unused gear is vital. You can sell it at a merchant, scrap it at the blacksmith, or use it as an offering at a shrine to get Amrita. The gear you use gains 'familiarity' as you kill enemies—the little progress bar at the top of the item description—and items you've got high familiarity with are worth much more Amrita when you use them as an offering at a shrine.
You can offer gear to a shrine by selecting 'Preparations' and then 'Make an offering'. As you swap weapons in and out and gain familiarity with them, you should mark them as 'locked' in your inventory so you don't accidentally scrap or sell them.