Answer: 1. The 2nd photo should be portrait since it is a portrait of the woman's face and the 5th photo should be landscape.
2. I can't think of other techniques besides maybe rule of 3rds. (my bad)
3. You should be able to take a photo of some history or like down a dirt road and just use the black and white filter for it
Again, my bad if this is incorrect I'm going off my own basic knowledge.
Step-by-step explanation: