Mysteries of the Runes

When Harry Potter arrives at The Burrow in the summer before his third year he is still haunted by the events in the Chamber of Secrets. During the long stretches of time when Ron is forced to complete his dreaded Summer Homework, Harry befriends Bill Weasley, and in turn Bill teaches him all about Ancient Runes. A Mentor!Bill fic, slightly AU, gen with perhaps a dash of pre-H/G.