I successfully downloaded a record but now every time I try to download another one it records the noise around me as opposed to the record. How do I make it record the record?

Your computer may have switched to the built-in microphone from the turntable. It could be a priority problem. Close Audacity, connect the turntable, wait a couple of seconds and then start Audacity. Did it start working?

If not, this is where you get to tell us what you bought and how you have it connected. Model numbers and what kind of Mac you have.