Trompowsky Attack

I am learning new openings, as my Bird is too often played at our chess club. This is the Trompowsky Attack. We morphed into a variation that lead to a advantageous version of the Blackmar-Diemer Gambit. My opponent declined the pawn on f3 and I was out of my known book at move #7.

Lesson Learned: I am taking too much time for moves. I missed a mate-in-4, so I need to work on my calculation skills.