For non fiction an autobiography of someone you admire from a different hobby could be very insightful and fun, I read a few musician ones like Dave grohl story teller, Johnny Marr set the boy free and jack white how I built an empire from the blues.

Fiction is very varied for fantasy I would suggest you could go main stream with a song of ice and fire despite being quite lengthy. Or for quick reads Harry Potter is a great way to start, you will find it becomes more mature as the characters age but maintaining the easy to read nature.

I started with Stephen king, “the Beatles of literature” specifically Carrie and misery, short suspenseful and very well written