Adults don't get the summer off, but that doesn't mean we can't raid the kids' bookshelves. Now that the last Harry Potter movie is coming on July 15, I'm re-reading the series by listening to the audiobooks. The narrator, Jim Dale, got put in the Guinness World Book of Records for creating 134 voices for the series.
If you never finished the series or are afraid you won't like the series, you may want to start with book 3, The Prisoner of Azkaban, which is more complex and suspenseful than the first two books. Now that I'm reading the fourth book, The Goblet of Fire, I think it's even possible to begin there without getting too lost. That will definitely put you in the heart of the series' action.
J.K. Rowling is expected to explain to what her latest project, Pottermore, will be on June 23. Could it be a new series? I'd settle for a single book - but not the encyclopedia Rowling has said she'll write. The Harry Potter Lexicon is good enough for me.