Verve records - Getz/Gilberto [Original recording reissued][Original recording remastered] available from Amazon.com. A little chesty in places but if you have a pair of M3s, a good sub and a tube amp, welcome to audio heaven.

Chesky makes some jazz samplers.

Audio Fidelity's re-release of Groove Note recordings.

Eric Dolphy's 'Out to Lunch.'
'Monk's Dream,' 'Kind of Blue,' 'Sketches of Spain'

That ought to get you started.

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.