One major mistake I made in this class is using Chegg [for homework]. Although it may seem like an easy way out by having all the answers at your fingertips, it will hurt you in the long run. Because of my use of Chegg, I had to retake this class because the teacher always finds out. It would be more beneficial to your overall long-term goals to just try it on your own and ask questions for the problems you may not know.