Short answers, pulled from the story.
Abbey Road was released on the 26th of September 1969 in the UK and on the 1st of October 1969 in the US, on Apple Records. It was the eleventh studio album the Beatles recorded, though Let It Be was released after it.
Abbey Road has sold more than 31 million copies worldwide. It sold four million copies in its first two months and was certified 12 times platinum by the RIAA in 2001.
Photographer Iain Macmillan took the cover photograph on the 8th of August 1969. He was given ten minutes to shoot while standing on a step-ladder outside EMI Studios, with a police officer holding back traffic.
The side-two medley is a 16-minute sequence of short songs and fragments, known during recording as "The Long One". It runs from "You Never Give Me Your Money" through "Sun King", "Mean Mr. Mustard", "Polythene Pam", "She Came In Through the Bathroom Window", "Golden Slumbers", "Carry That Weight", and closes with "The End".
"Something" was written by Harrison and released as a double A-side single with "Come Together" in October 1969. It reached number one in the US, becoming the first Beatles number-one single that was not a Lennon-McCartney composition. Frank Sinatra called it the greatest love song ever written.
Abbey Road was recorded on eight-track reel-to-reel tape machines, replacing the four-track machines used on earlier Beatles albums. It was also the only Beatles album recorded entirely through a solid-state transistor mixing desk, the TG12345 Mk I, which engineer Geoff Emerick noted produced a softer, more defined sound than the tube-based desks used previously.