Typography is a very important aspect when working with visual media. There are six main categories of typography: Oldstyle, Modern, Sans Serif, Slab Serif, Decorative and Script. When creating anything with typography such as handouts or logos, it is important to stick with one category. Creating something with multiple typefaces can make your work very unappealing to the eye. It can be distracting to the viewer and they may miss the message you are trying to portray.
Understanding the differences in each category of typeface is vital. There are so many different attributes of one typeface that will clash with attributes of other typefaces. Attributes such as in Oldstyle there are slanted serifs, which make for excellent body text. On the other hand, Script, is awful for body text and very difficult to read when put in a long text because they often just blend together. Each category has different and similar attributes, so understanding them and being able to identify the similarities and differences is very important.
It is important to remember, however, that you can use more than one typeface under some circumstances. It is vital in typography to keep the idea of contrast in mind. If you are going to use different typefaces for one project, making sure they contrast each other greatly is important. Using typefaces that are similar and only have a few differences is a very bad approach. You always want to make it easier for the viewer to understand the differences in your typefaces so that they don’t get stuck in the confusion of the differences: