Try the book/CD combo put out by Black Dog & Leventhal as part of the Black Dog Opera Library. It has the libretto and a lot of easy to read information on the opera, perfect for someone new to opera. The CDs are a classic 1972 recording featuring Edda Moser as The Queen of the Night and the great Kurt Moll as Sorastro. The ISBN is 1884822827, and you should be able to find a used copy on the Internet in the $6-$12 range.
Although that would be my first choice for you, a set of used CDs could be had very cheaply from any number of online sources (most will also have a booklet with a translation) and several websites have free, easy to download opera libretti.