After you make a copy of the Flippity template, you can easily customize it. I love that you can add as many words as you like, although if you add more than 30 it gets too crowded, and that you can colour each tile, which is handy to identify parts of speech. If you don't specify a colour, it defaults to white.

Under the Backgrounds tab, you can add links to different background images such as the blackboard image I used. The manipulatives template on Flippity.net has a variety of backgrounds, such as columns,  rows, grids and a venn diagram, which are great for sorting words, and other textures. If you want a specific background set as the default, you need to list it at the top on the spreadsheet. Students can also select whichever background they want by clicking on the settings gear icon at the bottom right.

Under the Options tab, you can have the word times appear randomly every time students access the link or appear in the order in which you listed it on the Terms tab. Then, after you publish the Google Sheet to the web, you would go to the "Get the link here" tab and copy the Flippity url generated for you to share with students directly, or you could embed it into your Google Site, like I did here:

Click on the image above to access additional resources, tips and tutorials.