When recording someone, or yourself, there are a few tips that will make your experience go that much smoother. (NOTE: Check the ACADEMY to see if there are any audio workshops underway. You can jump in anytime.)
Renting. If you have a smartphone, you can easily record with that. And there are plenty of free apps for that. But if you want to have a slightly higher quality recording, many people opt to use an actual audio recorder. You can often borrow or rent audio equipment at your local library, at your school, or through community programs such as public access TV or, even, music shops. There are also some good, inexpensive digital recorders to purchase; if you are doing a lot of sound work, it's probably worth the investment if you can.