I will try to answer your questions relate to keyword research. I also expect to write a guide at some point in future and these questions will help em identify the points to address. PS: Last time I started a QnA thread, I got some heat from some members. I do not claim to know everything about everything. I am sure there are some people who know more about this topic than me but are not willing to share either due to lack of time or to protect their IP.