This looks terrific, thank you! I just browsed the PDF, every single page that I looked at is useful content. Just for example, the page with the graphs of position, speed, and acceleration. I'll be honest with you, though. I understand the need to market and be edgy, but the profanity is completely out of place and is a factor in me not buying the book for my teenage daughters. I teach them to present themselves with dignity, and I would be undermining that education by introducing a profane book.