If I had learned this during my undergraduate years, I think I would have struggled much less. It's so useful that I'm recommending it to everyone around me. I'll listen to it two or three times and make sure to fully digest it and make it my own. Thank you, instructor!!! -- For the latter part, I'm reading the book before the lecture!!! The things I learned here have already come up three times in my actual work, so I've already put them to use. It's seriously amazing....... I'm going to follow all of your lectures. I'm a huge fan. ㄷㄷ