[danabramov]

Fonts often take months, if not years to design.

There are blogs dedicated to the process that help you learn about the process and decisions being made.

For example:

http://ilovetypography.com/2009/12/15/font-design-vesper-typ...

http://ilovetypography.com/2010/10/10/the-making-of-acorde-2...