Like others have suggested go to a library and speak with a librarian.

I started off with fantasy as a child (Wizard of Oz) and moved into SciFi (Arthur C. Clarke) then into macabre (Poe) then back into Fantasy when I had my own kids.

Now I read mostly technical or practical books. I love pre-80's engineering books.

Just because a book is a tome on North American spiders (read that when I was 8) doesn't mean it's not reading.