@lynnley,
I learned mine the old-fashioned way -- in school.
That might be difficult given your nurse's schedule.
I've seen elementary Latin grammar texts available in bookstores.
I'm not sure how good they are.
But I would definitely start with some elementary text or class.
It is indeed very 'orderly' and I think you'd need to get familiar with such
things as declensions and conjugations. Alas, there aren't many places
to go to immerse yourself in the spoken language.