The site I am most accustomed to, and therefore use the most…
THEWORD offers a downloadable tool you can quickly get comfortable with.
These are the ones I have used and am comfortable that most people can quickly get around in. There are billions of other tools. I do not attempt to try to rate these resources. None of these would replace the resources of, LOGOS, for example but when you are reading along online and see something you would like to check out… poof.