There is a new store in town that sells old music (1910s and onward), and while I find it enjoyable, the quality is generally poor.
I have long wanted to learn how to work with audio, and this is kind of a good excuse to get into it. As a hobby, I want to work with this old audio to practice working with audio.
I am new to this, so what sets of skills should I work on specifically for this?
The thing I want to begin with is removing noise from the recordings. The kind of noise I am talking about is the same as in, for instance, this collection: https://archive.org/details/BillyJonesErnestHare