I want to get a good biography of the group.
Shout!, by Philip Norman is considered the standard biography. He does display a pro-Lennon bias. It's also out-of-date, written as it was in the late 70s.
Bob Spitz's more recent
The Beatles: The Biography, is more balanced than Norman. It's also far more
massive than Norman. Until Mark Lewisohn's three-volume biography comes out sometime in the next decade, this is probably the best word on the subject. It's certainly the best single volume.
Mark Hertsgaard's
A Day in the Life is a good introduction, relating each album to the band's development. Ian MacDonald's
Revolution in the Head breaks down each
song -- how it was recorded, what it meant to the band, what it meant to the times. I don't always agree with MacDonald, yet I think his book is an essential volume. It's not a biography, however, though there are biographical elements.
Also of interest, Mark Shipper's
Paperback Writer: The Life and Times of the Beatles.
I do not recommend
The Beatles Anthology book,
unless you're a collector. It's a nice book. It's a pretty book. But it's not particularly edifying, and it lacks perspective.
For individual biographies...
Philip Norman's biography of Lennon,
John Lennon: The Life, is worthwhile. I find Ray Coleman's
Lennon to be near useless as it veers close to hagiography at times (and it's
rampantly pro-Yoko). Albert Goldman's
The Lives of John Lennon is brutal toward the subject and sensationalistic, not to mention blatantly fictional in places. Until Norman's book came out, I suspected that the truth about Lennon lay somewhere in between Coleman and Goldman. As an example, for Coleman nothing of interest happened to John between 1973 and 1979, except for getting his Green Card and the birth of Sean. The "Lost Weekend" goes largely uncovered in
Lennon, whereas Goldman chronicles the May Pang interlude (which she herself wrote about in
Loving John). Norman brings some balance to the period, which is part of why Yoko withdrew her blessing for the book.
Barry Miles'
McCartney: Many Years From Now is excellent, though it ends with the end of the Beatles.
I've read a George Harrison biography, Geoffrey Giuliano's
Dark Horse, but I can't recommend it. It was useless.
I can't think of a Ringo biography.