Short answers, pulled from the story.
Apple/Capitol Records released Ringo on the 2nd of November in the US and on the 9th of November by Apple/EMI in the UK. The album peaked at number two on the US Billboard 200 and topped the Canada RPM national albums chart.
Recording started on the 5th of March 1973 upon Starr's arrival in Los Angeles at Sunset Sound Recorders with sessions produced by Richard Perry. Taking part in the sessions were Marc Bolan, four members of The Band, Billy Preston, Klaus Voormann, Nicky Hopkins, Harry Nilsson, Jim Keltner and James Booker.
Starr, John Lennon, and Harrison appear together on Lennon's I'm the Greatest which was recorded on the 13th of March. Ten takes of the song were recorded in a session lasting approximately 18 minutes.
Photograph went gold in the US on the 28th of December while You're Sixteen acquired gold status in the US on the 31st of January 1974. The album itself was certified platinum by the Recording Industry Association of America.
When Ringo was reissued on compact disc the album included three bonus tracks: Starr's 1971 hit single It Don't Come Easy and its B-side Early 1970 as well as the B-side to Photograph Down and Out. The CD was released in the UK on the 4th of March 1991 and in the US by Capitol on the 6th of May.