The book of 'The Hobbit' was given to me to read by a friend of my mother when I was about 12 years old: it set my life on a different path. Next, I read 'The Lord of The Rings' trilogy, then 'The Silmarillion' and Homers 'The Odyssey' and every Greek/Roman/Viking myth book I could get my hands on. Pretty heavy reading for a 12 year old.