There are numerous online resources that you can use to help you understand the material. One collection of videos that I like is by a guy named “Patrick JMT“–as you can see, he’s posted on his website over 1000 short videos on a bunch of different math topics.  (You can also access them via his YouTube channel.)

You’ll have to look through his video titles to identify the ones relevant for our course–they’ll mostly be under the Algebra heading. For example, he has approximately 10 videos on solving absolute value equations and inequalities. Here is one that is a good summary of the techniques we discussed in class last week: