Don't just read the notes. Calculus is a "doing" sport. When you go to the site, cover up Paul’s solution with a piece of paper, try to solve the example yourself, and then uncover his work line-by-line to see exactly where your logic might have diverged.
Visit https://tutorial.math.lamar.edu/ to access Paul's Online Math Notes for Calc 1. With these comprehensive notes, you'll be well on your way to mastering Calculus 1 and achieving academic success. paul's online math notes calc 1