How do I symbolize basic propositions? Sentence letters

2.2 Basic Propositions of PL - 2.2.1 Glossaries
Basic propositions do not have other propositions as their component parts. We will use specific symbols for these. In this video, I explain which.

For this video: Read 2.2 Basic Propositions of PL - 2.2.1 Glossaries (pp. 32-35)
For next video: Read 2.3.1 Negation - 2.3.2 Conjunction, Do 2.3.3 Exercises (pp.36-37)