So, what is really 3D TYPOGRAPHY? In my own words, 3D typography is an arrangement and composition of text/alphabet in 3D space that we considered aesthetically beautiful, when properly designed can give extra impact to the message.
The typeface (the type of font) that is chosen can also influence the final look of typography design. True for 2D typography, even more in 3D typography, thus we have 3D TYPE topic.
Combine both 3D TYPE and 3D TYPOGRAPHY, then you have this huge design topic to explore. This is where you think FONT as character.
What would that topic has anything to do with Blender? Blender is actually a perfect tool for conceptualizing 3D TYPE design and TYPOGRAPHY arrangement in 3D.