Text zoom does not stick. How do I permenantly enlarge/reduce text size?
Text zoom (View | Text Zoom) is meant for temporary fix for pages with text too large or too small. If the default font size is not working for you, you can change it in the Preferences. Open the Edit menu and choose Preferences. Double click Appearance and choose Fonts. On the right panel set the font sizes. You can also set the mininmum font size. (Note: font setting depends on language, so you may want to fiddle with size settings for each language.