If prompted to sign in or buy, select the "Trial" or "Install" option.
Adobe officially supports the current version and two previous versions. Using 2018 means you will not have access to modern features like Cloud Documents, improved Puppet Warp, or updated SVG exports. 5. Troubleshooting Common Issues
It looks like you’re looking for a guide on how to handle a specific installation package for for macOS.
At least 3 GB of available space for installation. Monitor: 1024 x 768 display (1280 x 800 recommended). 2. Pre-Installation Steps
This is common if you have remnants of other Adobe versions. Download the Adobe Creative Cloud Cleaner Tool from the official Adobe site to wipe old files before trying again.
macOS 10.11 (El Capitan), 10.12 (Sierra), or 10.13 (High Sierra).