Check out this guide that focuses on issues specifically related to editing articles about LGBTQ+ people. It discusses issues like deadnaming, outing, and other important ethical considerations.
The visual editor allows you to edit Wikipedia without using its special mark-up language, instead giving controls that are similiar to a word processor or WYSIWYG editor.
The user page is a Wikipedia page you can create to make a short bio. Your sandbox is where you can practice edits or build pages before they're ready to be put into live Wikipedia.
