In the video, Jens goes through a bunch of variations on the most common progressions in Jazz. With each progression, he outlines how the reharmonized V chord is devised and what scales work over top of it. Along the way, you should start to recognize how those weird progressions in standards are really just altered or reharmonized ii-V-I cadences.
Below is a PDF of the various reharmonizations, although some might have slightly different fingerings.
2-5-1_reharmonizations.pdf |