Looking through some of my past work, I noticed I used the font Myriad a lot. At first I wondered why, then I came to the realization, it might be because Myriad is the default font in Illustrator. After that, I changed my default font for new documents. It is really easy to do, so read on to find out how.
Chose File > Open and navigate to the folder Username/Library/Application Support/Adobe/Adobe Illustrator CS4/New Document Profiles (Mac) or Documents and Settings/User/Application Data/Adobe/Adobe Illustrator CS4 Settings/New Document Profiles (Windows). Here, you can open one of the default document profiles you want to change the default font of (Basic CMYK, Basic RGB, Mobile and Devices, Print, Video and Film, or Web).
For this step you will have to open the Character Styles panel by choosing Window > Type > Character Styles. Select the Normal Character Style in the Character Styles panel, choose Basic Character Formats from the panel menu, choose the desired font from the Font Family menu, and press OK.
Save and close the file. To use the new template, choose File > New and select the default document profile you changed.
This tip originally appeared in the March/April 2009 issue of Layers: The How-To Magazine for Everything Adobe.