how do i increase font size?

What font in particular do you want to increase? Is it the text in the menu bar, the content in your web browser, the icon fonts or something else? If you can tell us, we can help you better.

Since you suggest increasing the size of 'the fonts', I am going to make a wild presumption in that you have a harder time reading what is on your screen in general. In that case, you can actually make everything on your screen appear larger by changing the resolution. Very simple:

• Click on the Apple icon in the top left corner of your screen.
• Click on System Settings - The System Settings window will open.
• Click on 'Displays' - Which you can find along the left side of the System Settings window.
• You will see options that say, "Larger Text --- Default --- More Space".
• There should be a blue outline around the option that is currently selected. Click on the one to its left and your whole display should go larger. If you don't like the new setting, just change it back.

In case you only want to increase certain fonts, please let us know which ones and we will take it from there!