Statement of the Problem
Don't precede to the next video without considering some examples first! Your examples will help you develop intuition for the statement of the problem.
An Example
After you've watched the video, take a look at your examples again. How might you use the $\epsilon$-$\delta$ definition of continuity in your arguments?
Using the Definition of Continuity
Make sure that you attempt to write your own proof before watching the next video.