Help ...I must have done something the letters are too small and I can`t remember how to fix it...

Click on View in menu bar (top line of screen) ... menu should drop down to Text Size, adjust Medium, Larger, Largest and your font should be bigger

If that doesn't work hold your control key (Ctrl) down while you roll your mouse wheel away from you (rolling it toward you makes it smaller)

Got it Guys Thanks ...

Good, now you are back in business....