They have like 12
different font families that will appeal to people of all ages.
It is also problematic for visual users, as the images often scale poorly and the characters can not be changed to
different font families to meet user preferences.
Not exact matches
The
font for titles or for your author name, the same general layout, the same range of color tones (even if you're using
different colors you can keep your tones in the same
family).
At book display to the screen of the e-book reader for epigraphs, the basic text, summaries and verses can be used
fonts of a
different families and the size.
If you wanted to stick with one
font family (e.g. Helvetica, or Arial) you can create beautiful
font pairings by using the
different font weights.