Dingbats are fonts that made with images, so in your Word Processing program you can 'type' pictures. They can be resized by increasing font size. Very handy.
Lots of fonts are free, each font has its own type of licence for use - Personal, Commercial, Shareware or Donationware. There are variations of quality, but hey - we like 'Free'.
If you can drive graphics programs you can get in and manipulate them, arrange them into new designs, and build them up to make bigger or more detailed pictures or scenes.
Want to get to know How to Install Fonts to Your Machine? Follow the link.