Browse to the Chrome Web Store by typing "Chrome Web Store" into Google or just clicking on this link. Type "Crafty Text" into the search bar and then hit enter. You'll see CraftyText listed under extensions. Click the blue "Add to Chrome" button.
You'll be prompted for permission to install. Click "Add Extension".
The extension will now be installed and you can see the little CT icon to the right of your address bar.
Now when you have text you'd like to share with your audience, just click on the CraftyText icon and a little box will open for you. (Sometimes you need to refresh your Chrome window before it will work the first time after you install it.) Type whatever text you'd like displayed into the box and hit enter.
Then you will see the text displayed giant size across your screen.
When you are done with the text, click the CT icon again and it will go away. This is one of my very favorite extensions. Enjoy!