All seven books.
The initial print run of Harry Potter and the Philosopher's Stone was 100.
No. The book was titled Harry Potter & the Philosophers stone for the rest of the world while in USA and India it was called Harry Potter and the Sorcerers stone
The initial UK print run of Harry Potter and the Goblet of Fire was around 1.5 million copies. The US initial print run was 3.8 million copies.
I'm not sure about all the books but for Harry Potter and the Philosopher's Stone in the UK, the original print run was only 500. This was kept to this amount as the publishers didn't think that people would want to read about a boy going to wizard school. However, when the first print run sold out very quickly, they reprinted and did, I think, 5000 books. Again these sold quickly and so re-runs were done. The rest they say, is history.
There are German copies of the Harry Potter books in print. These can be purchased online (Amazon, Alibris, Ebay, Bookfinder.com) or your local bookseller or library can order them for you. If you don't know the German title translations, run a Google search on "German Harry Potter," and they will come up. If you live in a major city, you may be able to pull one off a shelf. I have copies in three languages (not German) and have used them to help develop my reading skills.
Go to the link in related links. There, you can print out bookmarks.
No, there are no legal ebook editions of any of the Harry Potter books that are available to the general public. The only legal Harry Potter ebooks are those that are specially formatted for people with print disabilities and are available from the Library of Congress National Library Service for the Blind and Physically Handicapped Web-Braille download service, and the non-profit organization Bookshare.org. They will only work on braille displays, digital talking book players, or other assistive technology for the blind, not on the Kindle.
10.8 million copies.
UK=1.5 million US=3.8 million
If you're willing to print them out then the link in related links should work.
Rowling, J. K. Harry Potter and The Order of The Phoenix. New York: Scholastic Inc., 2003. Print.
Sure you can print it. Obviously it won't magically show you where people are - that kind of magic only exists in stories, not in the real world.