Some of our products are bundled together into ZIP files for faster download experience.
To use the files in the ZIPPED folder, you need to unzip (or extract) them. Your computer likely has a ZIP utility already installed.
To “extract” the files, right-click the ZIP folder and choose “Extract All” from the pop-up menu and click extract on the next window. This should create a new folder that's not "zipped". Open the new folder and you should see all of your PDF downloads.
If your computer does not show the "Extract All" option, download the free zip utility 7zip available at http://www.7-zip.org/.