Re: How to change display settings for my gmail? Now too small.
To zoom the page larger, you normally hold the Ctrl key and tap the + key on the numeric keypad.
If you have a laptop, there isn't a real numeric keypad, but you should find a set of extra numbers printed over the middle of your keyboard. This is the embedded number pad, and you should find both a + and a - key.
To use these keys, you usually have to hold the Fn key (or similar), so it is Ctrl+Fn++ to zoom larger, and Ctrl+Fn+- to zoom smaller.
Hope that helps clear it up.
Edit: Actually, the hyphen/underline key and the +/= key might also work, with no Fn key needed.