I enjoy singing for fun, and I'm really struggling to find my head voice. I've never been told what my voice type is, but if I had to guess I'd say I'm likely a baritone. As the title states, I'm wondering if you have any tips on finding my head voice. When I try doing anything high it sounds like a super airy falsetto, and that's obviously not what I'm trying to do. Any advice is appreciated.

-Oh, I understand lessons are my best bet, but I'm a college student and can't afford any right now. :/