The series goes on! This week we have a look at the systems with Qe2; namely, 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 and 5.0-0 Be7 6.Qe2. The presentation this week isn't (mini-) encyclopedic, so I don't say too much about lines with ...Bc5 or ...Be7 with ...d6; rather, the focus is on lines where Black plays ...Be7 and ...d5. The reason for that is threefold: first, to keep the length of the presentation manageable; second, because it's the most common and can be used against both White move orders; and third, it seems like the most reliable equalizer.
But see for yourself! The show is free, as always.