A few years ago Jan Gustafsson did a two-disk repertoire series offering a 1.e4 e5 repertoire for ChessBase based on the Marshall Gambit, and it was the best video series I had ever seen at the time, bar none, and by far. That series was #1, and whatever I'd count as #2 basically didn't exist in the same time zone.
His new series for Chess24 isn't meant to replicate or compete with the earlier work; rather, it's an update of sorts. The series, called Marshall 2015 (free preview here), only examines one particular line of the Marshall (8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d3), along with the Anti-Marshall lines 8.h3 Bb7 9.d3 d5 (in two videos) and 8.a4 b4. If you're a fan of his ChessBase material or a Marshall Gambiteer you'll want to check this out, but if you're looking for a repertoire to get you started you'll want to start elsewhere and come back to this later on.