bdbgittyhubby Assuming that you're using Mate for your DM, the easiest 'global' way is to set the screen DPI to a higher value, i.e. navigation for Mate:
System, Preferences, Look and Feel, Appearance to bring up 'Appearance Preferences'.
In 'Appearance Preferences' click on the 'Fonts' tab, then click the lower right hand button 'Details' to open 'Font Rendering Details'. The DPI setting is in the upper left.
The default DPI for my desktop system's 22" display is usually 96. But for smaller screens I've found that a DPI setting of 110 is preferable.
Excuse the long winded detail. I always write instructions with newbies to the Mate Desktop Environment in mind, since forum pages tend to be around for a very long time. Such instructions will be found helpful by many others passing this way.
HTH, Byron