Electronic Text Readers (eReaders) that allow different user specific fonts to be used, some require 4 font styles of the font that user chooses:
regular
bold
italic
bold italic
Please tell me if there is any user friendly, newbie / easy to use font software that allows these 4 font styles to be created, preferably free font software or free online font software.
The font software should also allow this font file naming convention / allow flexibility in font file naming:
[name]-Regular.ttf
[name]-Bold.ttf
[name]-Italic.ttf
[name]-BoldItalic.ttf