The most important thing I got from the readings would probably be the three Cs, concordant, conflicting, and contrasting.
A concordant relationship occurs when you use only one type family without lots of variation in weight style and color. A conflicting relationship happens when combining typefaces that are similar in style size and weight. A contrasting relationship occurs when different type faces are combined that are distinctly different from each other.
There are some guidelines that I learned from the reading in regards to type on page or screen:
-readability for the viewer
-know when to use serif fonts and when to use sans serif fonts.
-work with leading, kerning, and tracking to improve readability
-always experiment with font size and weight to achieve hierarchy