After getting the (broken) item back you have to decide if you want to give it to Aranea or Nelacar for repairing. Both rewards are terrific in their own way. Repairing the item through Nelacar's aid will eventually give you The Black Star; an endless soul gem that can only house ...
NOTE: You can still use the glitch to read the Oghma Infinium twice, but instead of pressing "do not read" in step 7, choose a path. The book will disappear afterwards but you have will gained twice as much xp. (Does not have to be Whiterun house, I tried it in Proudspire Manor ...
For the Vampire Dust, you can also get it by upgrading your alchemy lab for your house. For the Silver Ingot, head over to a blacksmith, who will sell it. If he/she only has silver ore then buy that and take it to a smelter and smelt it into a silver ingot. The hard one to ...
You need to have left Markarth and return for a second time to activate this quest. When you return the second time and pass the Abandoned House in Markarth, a gentleman named Vigilant Tyranus will be talking with a Nord named Yngvar. When Tyranus is done, he will ask you some question...