To increase the size of on-line text, follow the instructions for the browser you are using:
Go to the "View" menu, then select "Text Size". You can choose from five settings to change the size of the text: Largest, Larger, Medium, Smaller, and Smallest.
Go to the "View" menu, then select "Increase Font". Repeat until the text size is large enough for you to read comfortably.
Go to the "View" menu, then select "Text Size". You can select "Larger" to increase the text size in steps, or jump straight to a percentage size.