I may have been the last person on earth to pick up any of the "Harry Potter" books, but I'm pretty certain I wasn't the last one finished. It's amazing to me the number of people who have at least read book one, let alone the number who have actually finished the series.
I spent 11 weeks recently reading the 4,000 or so pages in the series. I have already seen all five movies that have been produced, so I hurriedly pressed through the first three books. Books four and five were probably my favorite, although books six and seven were pretty decent, especially considering that I didn't know what would happen. Author JK Rowling's style is fascinating, maybe due to the fact that it's fairly simplistic. She creates impressive visuals without struggling through run-on sentences or an immersion of extra words.
Even though the books were initially geared more toward the young adult crowd, I'd recommend the series to adults as well. I decided not to worry about adding links in my review because if you cannot find the "Harry Potter" books on your own, then you might need another type of assistance!