When you create a new Excel file, it contains three worksheets — they show as small tabs at the bottom of a worksheet. Each tab has a name, like Sheet1, Sheet2, an so on. You can see the data stored on each worksheet by clicking the tab of the sheet you want to view.
Renaming a worksheet or changing the color of the worksheet's color makes it easier to organize and keep track of the data you've created.
When you need to shorten an URL, a service like TinyURL works great.
But when you need to provide multiple URLs in a small space — like I did for a library when there was room for only one link — there are free tools that make it easy to bundle those URLs into just one link. (Good to keep in mind for a post on your library's Facebook page, or for a 140-character tweet.)
Here's my favorite URL-bundling tool, with step-by-step instructions to create your own bundle: