Short answers, pulled from the story.
The first sessions for Abbey Road began on the 22nd of February 1969 at Trident Studios. The group recorded a backing track for I Want You She's So Heavy with Billy Preston accompanying them on Hammond organ.
George Harrison introduced the synthesiser to the band after acquiring one in November 1968 and using it to create his album Electronic Sound. He used the instrument to create his album Electronic Sound before bringing it into the Abbey Road sessions.
The front cover photograph was taken on the 8th of August 1969 outside EMI Studios on Abbey Road. Photographer Iain Macmillan captured the image at 11:35 that morning while standing on a step-ladder as a policeman held up traffic behind the camera.
As of October 2019, Abbey Road has sold more than 31 million copies worldwide and is one of the band's best-selling albums. It was also the National Association of Recording Merchandisers best-selling album of 1969.
Come Together was an expansion of Let's Get It Together, a song John Lennon originally wrote for Timothy Leary's California gubernatorial campaign against Ronald Reagan. A rough version of the lyrics for Come Together was written at Lennon's and Yoko Ono's second bed-in event in Montreal.