Also, I wasn't to fond of using black background and bright colored squigly writing for learning calculus. I have ADHD and learning math and calculus has been such a huge challenge. But I found work done by patrickjmt[1] to be amazing. It's clear neat and concise, and was able to get through Single and Multivariable thanks to him. My girlfriend and my sister really loved the way he explained calculus as well.

http://patrickjmt.com/