How would I save a word file that I have created so that I can open it in a
way that I can edit the fields I have created within it?

example:

Name: _________

I want to be able to fill that field without having to do it with a pen. I
want to do it on a computer. Is there a way I can do that in WORD? Do I
need to use Adobe? If so how do I export it into a file Adobe can read?

Thanks so much!