Here are some videos on integration using substitution. These should help! They are both on integrating using substitution so you can choose to watch either one.
1.) http://www.mathtv.com (go to calculus, then integration, and then substitution)
2.) Youtube video below
1.) http://www.mathtv.com (go to calculus, then integration, and then substitution)
2.) Youtube video below
Let me know which video(s) you liked best! Bring any questions with you to class!