“There’s a bunch of buttons on this camera but I have no clue what they are, or how to use them.”
Everyone starting out has had that problem. A general rule of thumb is, if there is a button for it or a setting on a piece of equipment or it's in the software, it is there for a reason. When you don’t learn that function and what it does, you could be making things a lot harder than you need to and missing out on crucial elements that can help make your film or video the best it can be.
Understanding what a neutral density filter does, and how it can expand your aperture options is an important concept for every shooter. Learn to get more control over your depth-of-field by using this effective tool.