This is not my review of the book, yet, but there are a few things I just had to share. If you want to read, and be aware that this done contain spoilers, then highlight the text below with your mouse.
I have not yet had a chance to go back and read through the series again, I think I am going to find so many more hidden clues that I had not picked up on before. Already I am remembering what Petunia said after revealing she knew what Dementors were, saying she overheard her sister and “that awful boy” talking about them. Well, I think we assumed “that awful boy” was James, but now we know that it was Snape. An interesting clue that very few people seemed to have picked up on.
The lessons we learn about wand lore also explain Neville’s difficulty with magic early on, considering he was using his father’s wand. He never won that wand, so of course it did not work properly for him.
What other clues have you noticed spread throughout the earlier books that were not clear until you read Book 7?
