Folk Sheet Music
There are a variety of different types of sheet music available for folk music. You can find sheet music specifically written for folk music, or you can find sheet music that is more general and can be used for a variety of different types of music. If you are looking for something specific, there are likely a number of different options to choose from. However, if you are just looking for some basic music notes to help you get started, there are also a number of resources available for that.