Mandolin is such a fun musical instrument to play and learn! It is a lead instrument in a lot of folk music and is also prominent in classical music.
Learn the fundamentals of picking, scales, chords, and reading music. I also teach folk styles like bluegrass, Irish, Italian, and jazz. Mandolin is also a great instrument to learn improvisation on. And if 8 strings seems like too much to handle I also teach Ukulele lessons.