Now that the machine itself is configured, you can optionally change a few print profile settings for the Mega X. The default print settings inherited from the i3 Mega should work great for the Mega X, except that I recommend updating a few values (below).
Download the Mega X Cura profile
You can find importable Cura profiles for PLA and TPU on the USB drive that came with your printer, or mirrored on our GitHub repo. Download those profiles and import them in Preferences > Profiles.
Or, manual setup
Navigate to Preferences > Profiles > Normal, click Duplicate, and give it a name such as "Mega X Profile" or "Mega X Normal Profile". I generally use a single profile and update quality from there, but that's up to you.
Close the settings panel. In the normal "Print settings" Cura panel, change the following settings:
|Outer Wall Speed
|Z Hop When Retracted
When you're done, reopen the profile in Preferences > Profiles and click Update profile with current settings/overrides.