The Raspberry Pi Zero might still be hard to find, but at least it's not hard to use. DIYer and teacher Te Co Ed shows off how to easily program and use the Pi Zero over USB.
With Te Co Ed's guide, you don't need another monitor, you can just use your computer as is, plug the Pi Zero into your USB slot, access the Pi Zero, install VNC and go from there. It's super easy to do and when you're done, you can deploy whatever Pi projects you want without dealing with much in the way of set up.
The video walks you through everything you'll need.