sir after 1.e4 d5 2.nf3..qd8 or qa5 etc lines are not covered in the course i dont think these lines are critical and it is very rare but i checked some lines with stockfish the arising positions and pawn structures are very different and has some independent value , if u make a brief video how to handle these positions that would be great sir . thank you
If Qd8, you just do d4,c4. The philosophy was explained. This is all idea of 3.Nf3. To play d4,c4. It's important to understand the ideas. Then you'll come up with right moves, when opponent plays something strange.