Start Here.

If you need a starting point with America’s music, this one is as good as any and better than many: 

It features a veritable pantheon: Vic Dickenson, Danny Barker, Doc Cheatham, Freddie Green, Rex Stewart, Milt Hinton, Roy Eldridge, Count Basie, Coleman Hawkins, Thelonious Monk, Gerry Mulligan, Pee Wee Russell, Jimmy Rushing, Billie Holiday, Lester Young, Ben Webster… and the oh-so-telegenic Jo Jones.

 Watch it all the way through, in one sitting. Better video copies exist but the music is intact.