At first blush, Nioh’s screen looks being a pretty standard HUD — plus it is, but like things in Nioh, it’s just turned as much as 11.
In the superior left will be the things you’d expect. There’s an exclusive attack meter — your living weapon gauge — your health as well as your stamina (or life and ki, in Nioh-speak). The light blue line at the top is your life along with the green line below is the best ki. 
The top right can be your compass that points someone to MUT 19 Coins an objective, also it glows red each time a demon is nearby. (Don’t think of the usb ports as a minimap. It’s a compass.) 
At underneath left will be the Dark Souls-style item shortcuts. In Nioh, though, you might have two of them and also you swap between them R2. This provides eight shortcuts across two customizable loadouts.
Next on the item shortcuts, you’ll experience a current count of one's samurai, ninja and onmyo skill points. 
About halfway up the best side with the screen are the equipped ranged and melee weapons. You get two of each and every, so you swap bewteen barefoot and Buy MUT 19 Coins shoes by holding on the right shoulder button and showing up in D-pad (down and up for ranged and all over the place for melee). 
Below that may be your current stance. (Check your section on Nioh's stances for much more.) You swap between high, mid and low stances (and sheathing your weapon) using the right shoulder button at the same time, then pressing triangle, square, x or circle.
Under that, inside very bottom right, can be your current gold count and your current amrita count. These will be the game’s currencies — gold for stuff like items and services and amrita for leveling up.