I purchased a hard copy (CD) version of Lightroom. I am trying to download it, but I have a MacBook with no CD drive. How do I download Lightroom online with my product key and serial number?
What version of Lightroom did you purchase?
You can download any prior version from the link below and use the serial number to activate.
If you purchased the latest version Lightroom 6 then download the current trial version of Lightroom CC then you can use your serial number to license it as LR 6. see info on the link below.