The ii-V chord progression is the cornerstone of jazz. Sometimes the progression includes the I chord (ii-V-I), and sometimes it does not. Here is a list of ii-V-I progressions in all 12 keys. It is important that you (are eventually able to)recognize these instantly at sight: Dm7-G7-CMaj7 Gm7-C7-FMaj7 Cm7-F7-BbMaj7 Fm7-Bb7-EbMaj7 Bbm7-Eb7-AbMaj7 Ebm7-Ab7-DbMaj7 Abm7-Db7-GbMaj7 Am7-D7-GMaj7 Em7-A7-DMaj7 Bm7-E7-AMaj7 F#m7-B7-EMaj7 C#m7-F#7-BMaj7

Note that in the jazz languauge, 7th, ninth, and 13th chords are basically interchangeable. (Bb7=Bb9=Bb13). Watch out for altered chords- flat or sharp nines or fives- those can mean something altogether different...