Lecture 1-Video: Equilibrium and the Mass Action Expression  

Lecture 1- Notes

Lecture 2-Video: Equilibrium and Phases, ICE diagrams  

Lecture 2-Notes

Lecture 3-Video: Le Chateleir's Principle  

Lecture 3-Notes

Lecture 4-Video: Spectrophotometry and the Beer-Lambert Law  

Lecture 4-Notes

The Beer-Lambert law has become more common on the "lab" questions, it's frequently used to determine the concentrations in experiments which are used to determine the equilibrium constant. Below is a video reviewing how to do that.