The answers to your questions are someone who knows, yes, and it depends. There is some information on that in the last week of https://www.coursera.org/course

The answers to your questions are someone who knows, yes, and it depends. There is some information on that in the last week of https://www.coursera.org/course/design https://www.coursera.org/course/design but if it applies to your idea depends on your idea.