lightroom - I will be switching from PC to MAC. if I download the software how do I install it later on the MAC? Thanks

download the mac installation file when you are ready.  don't forget to deactivate (help>deactivate) on your pc if you'll no longer need lr on your pc.

Downloads available:

• Suite:  CC | CS6 | CS5.5 | CS5 | CS4 | CS3
• Acrobat:  XI, X | 9,8
• Premiere Elements:  12 | 11, 10 | 9, 8, 7
• Photoshop Elements:  12 | 11, 10 | 9,8,7
• Lightroom:  5 | 4 | 3
• Captivate:  7 | 6 | 5

https://helpx.adobe.com/download-install.html

Download and installation help for Adobe links

https://helpx.adobe.com/download-install.htmlDownload and installation help for Prodesigntools links are listed on most linked pages.  They are critical; especially steps 1, 2 and 3.  If you click a link that does not have those steps listed, open a second window using the Lightroom 3 link to see those 'Important Instructions'.