'Please read the following before making any edits if you are new! It will ensure that the edits you make are of the highest quality!'
https://nioh.wikia.com/wiki/User:TheEmbracedOne/To_Do - on this page you can see what tasks are being done by whom and also where help is needed. If you wish to contribute, feel free to pick a task and mark it as yours by adding your name to it. Alternatively, you can search for "Missing information" to find pages that are missing information.
https://nioh.wikia.com/wiki/User:TheEmbracedOne/Editing_Guidelines is a set of guidelines and some rules of thumb to be aware of that will help you get kickstarted on contributing to the Wiki.