A:AnswerMake sure the printer is on and connected to the Wi-Fi. Go to the App Store type in the printer brand follow the instructions you can link your printer from there.
A:AnswerYes the Mac Air I believe to be user friendly. And with you already owning Apple product it should be even easier. The price is higher than others but its longevity is amazing. Texting and emailing are a breeze, it’s like having a bigger iPhone. And using your phones hotspot is a breeze as well
A:AnswerFrom what I could find the Mac OS 12 system is compatible with the rekordbox system, you can download the driver form the rekordbox website and just give permission to the app to use aspects of the Mac (microphone etc)