There are a ton of resources on the web for learning how to read sheet music, and also practice and performance skills. I’d look first into videos explaining how to play the “whistle” mouthpiece of a flute, unless you’re already familiar - sorry, I don’t know your background. The flute mouthpiece can be hard to play, but there should be lots of video help available online. Then there is the fingering. This can be learned through very slow practice with some beginner sheet music and, again, you can probably find some good free educational material on YouTube. Also look for videos talking about not only fingering, but proper hand position. You don’t want to develop bad habits. I’m a Music professor, though I’m vocal and not instrumental, and I will say that taking one-on-one lessons would be the best way to go, but there is absolutely a lot you can do on your own. With guidance from an instructor, though, you’re likely to achieve better results. Certainly doesn’t have to be University-level instruction. Is there a Community College nearby with inexpensive tuition for local residents? I teach at Dallas College, and local residents can take classes for something like $60-$70 per credit hour... for the whole semester. Very cheap, comparatively. Of course it is different wherever you go. Also, they may suggest you take other classes or an ensemble, and you might not wish to go that route. Some institutions will also have an instrument you could check out as long as you’re a student. If you already have a flute, you can definitely learn a lot on your own. It does take determination and discipline, as well as a lot of time seeking out valid and high-quality resources. Good luck, and enjoy the journey!