Firstly - you have to have an account registered with us - as our download section is only available to our registered customers.
Once you have an account - please log into it and select the product you want to demo from the "Download Trials" list found on the left side of the screen.
Select the version/edition you want to demo and click on next.
Select and download one of the installers that is suitable for your OS and has a word demo in the installer file name. Please note the exact file name of the installer you are downloading - as both demo and full featured installers are provided. Demo installers should not need any license key file to use.