You need to edit your stylesheet. Before doing ANY of what I suggest, make a backup copy of your stylesheet the way it is now. Just in case.
In the Admin area, click the left column button for Appearance, and then click editor.
Changing just one setting will change a lot of the font sizes on your whole site. This is near the top.
body {
background:transparent url(images/gbck.gif) repeat scroll 0 0;
color:#666666;
font-family:Verdana,Arial,Helvetica,sans-serif;
CHANGE --> font-size:11px;
margin:0;
padding:0;
}
Change the line I marked from 11px to 13px, save, and see what you think. (That one line will affect the type size on more of the site than any of the other lines. ) Then you can go through the stylesheet looking for references to font-size and make them larger than they are, until you are happy with what you see. Just do them one at a time, in case you are not happy with something you changed, so you can then change it back.
If you do more than one at a time you will not know which setting increased which section of the site.
You have to refresh the display of your site after each change you make, to see the change in place.
