For those who expected what I was talking at first, the official book collector for 10 years David Wild Friends is recommended. I bought both books, they complement each other perfectly, the beautiful "photo-book" is not always very detailed as to the seasons, it is however excellently illustrated, it brings together a "potpourri" of -best the best times - as well as multiple interviews, the main advantage "Friends" ... 'til the End: The One with All Ten Years.
This encyclopedia will is not to read in one sitting but rather as a snack before the DVDs, letting himself be carried in the now well known stories of our New York six favorites. Useful to refresh his memory, ideal for reading "lazy"!