“Mixing” is sometimes used to describe adjusting levels within different effects so it is appropriate. I have edited many voice recordings including some radio programs and advertisements. There is definately much room for improvement over any raw vocal recording. Some suttle adjustments, some not so much.
Advise on specific settings is highly dependent on the recording. But using a simple equalizer you will want to make sure you can here the “s” sounds. Put a small bump around 10k hz. Drop off everything below 80 hz. And pull down some at 500 hz.
It would be beneficial to use some sort of dynamics with a bit of compression as well. Staying close to the mic is very good advice. As close as you can without making popping noises. A homemade pop filter from pantyhose or something will be needed.
This is just very simplified advice but could help some. Otherwise just mess around till something sounds nice:)