It’s to the right of zero on the keyboard.

-MM

As already stated,; to the right of the ZERO key;

this – is the HYPHEN;

and this _ is the UNDERSCORE.

Both are on the same key.

To get to the UNDERSCORE you have to use the SHIFT KEY to get to it.

The HYPHEN can be used simply by reaching with your right pinky finger or whatever fingers you use to press that key.

You can also find the MINUS KEY on the NUMBER PAD useful as a HYPHEN when typing things like: we got snowfalls ranging from 1-30 inches last year.

You might want to try getting a typing tutor to help with memorizing the keyboard.

There are many FREEWARE, SHAREWARE and on-line too that you can choose from on this website.

http://typingsoft.com/all_typing_tutors.htm