If you are unable to click on the link to the Adobe Reader website above then type in http://get.adobe.com/reader/ in the website bar.
Once you are at this page click the "Download" button. Then follow these instructions to download and install to your computer.

If a dialog box appears with the option to run or save, click run.
Then it should download and upload the rest of the way.
Mozilla Firefox will not install Adobe Reader from web sites until you add them to the Allowed List. Please follow the steps below.

Click on the “Edit Options…” button in the bar to continue with download

Click on the “Allow” button to add the site to the list of allowed sites
Click on the “Close” button to continue with download

Click on the refresh button on your browser.

Click on the "Install Now" button to continue with download.

Click on the dialog close button.