You can install the Adobe Creative Cloud Desktop app from here:
then use the Adobe Creative Cloud Desktop app to install apps:
For Lightroom specific questions, you can post a question to the Lightroom forum at
I think I would be tempted to start with the iMac, and then you get to see if the import was successful.
- Install LR CC 2015.1 on the iMac
- Use the plug-in to import the Aperture Library
- Repeat for the iPhoto Library
Then install LR CC 2015.1 on the laptop and you have some choices.
Do you want to use the internal SSD to store images on the MBP or do you intend to conserve the fast drive by storing images on an external hard drive.
To use the internal space on The MBP you can follow the standard method for moving to a new computer e.g. moving the cataolg , previews and image files.
To use an ehd, would require some extra steps and updating the folder locations in LR on the Imac.