If you are finding it hard to ready the screen on your Chromebook, you have two options to adjust the screen to make things bigger.
Option 1: Adjust the Screen's Resolution.
Click on the bottom right corner of your screen. On the pop-up menu that appears, click Settings. In the middle of the screen that appears is a button that says "Display Settings." Click that and you can adjust the Resolution down to something smaller, like 1536x864 or 1200x675.
Option 2: Adjust the Screen's Zoom.
Click on the bottom right corner of your screen. On the pop-up menu that appears, click Settings. In the top right corner of the window that appears is a search box. Enter "Page zoom" and you should be left with two settings. Click the bottom setting, "Page Zoom" and set it to something higher than 100%.