Timestamps:

0:00 - 0:25 - Introductory Remarks
0:26 - 4:16 - Terminology for Differential Equations
4:17 - 7:22 - Simple Initial Value Problem (IVP)
7:23 - 10:31 - Introducing Second Order Linear Equations, Principle of Superposition
10:32 - 12:50 - Proof of Principle of Superposition

Disclaimer: This video is one of the earliest videos of mine and thus you may notice stuttering and scratchy noises from me moving my arm across my desk. This video is not representative of future videos in this course.