(Typography is a huge part of the digital arts, and for any field, you should know how to properly use it. If you have some extra time, read and learn more on the creative and proper usage of typography below.)
An Artful Science: Why Typography First?
Explore the examples from C. Knight and J. Glaser in “Creating Visual Hierarchies”
Read the following on serif vs sans-serif fonts:
Please read the following to get a better sense of how to use absolute and relative font sizes, as well as the differences between the various units.
For more information on kerning specifically, read:
There are many more pseudo-classes than these discussed so far. To learn more about pseudo-classes, as well as all that exist, please read this following comprehensive article on CSS pseudo-classes;
For information on what browsers support what types of font formats please read:
Sourcing fonts can have associated pros and cons, too. Read: