Dumbledore's hand turns black, shrivels up, and "dies" because Snape "trapped the curse in one hand for time being." The curse was from Marvolo Gaunt's ring. (Look on pg 681 in the 7th Harry Potter book.)
Harry Potter and the Half blood prince - the 6th book
knock
In the Room of Requirement.
with the magic of dumbledores testicles
Wand coloured.
poppy pants
WHERE? IF you mean what is his patronus, I think it's a phoenix
The order of the Pheonix
Phoenix's feather - It is feather from Dumbledores phoenix Fawkes.
If you are referring to the book: Harry reads an article about Dumbledore written by Elphias Doge; Dumbledores old friend. It explains a lot about Dumbledores childhood. After that harry reads another article about Dumbledore written by Rita Skeeter. This article explains more detail about Dumbledores childhood too.
That's classified information.
Deluminator or put-outer which was given to him in dumbledores will