The Last Hearld-Mage: Magic's Pawn, by Mercedes Lackey. The beginning of a great trilogy, this series is known for having a homosexual main character portrayed as a moral, normal person, which was unusual back in 1989.
When I first read this book in the 1970s, I fell in love with the world created by Tolkien. Of course I was "hooked" and had to read the Lord of the Rings trilogy that continued Bilbo Baggins's adventure. Tolkien's creation is such a gift to the world. This is one of my all-time favorites.