Book Two Discoveries!

[abadgerfan2]

No: HPFGUIDX 111511

On her site, Rowling's answer to a FAQ discloses that one of Harry's 
Book Two discoveries "foreshadows" something that he finds out in 
Book Six.  Has anyone made an inventory, in chronological order, of 
Harry's Book Two discoveries? One could then methodically go through 
and consider (with a chance of more accurately predicting) what is 
to come in Book Six! Thanks!