1. Go to this link:.
2. Click Try on the top right next to the Buy button.
3. Next you will be asked to login with an Adobe ID. If you don't already have one, you can create one for free.
4. After you login, a download screen appears.
5. Select the version for your computer from the drop down.
6. Click Download now and wait for the file to download.
7. Click on the file you downloaded to install the software.
After you have the software installed, you will need to create a connection to the website in order to update it. Contact your web administrator who will send you a connection key with instructions.