I am sharing my work on creating godot inventory system for RPG games from scratch. I hope you'll find it helpful. You can tell me if its helpful so I'll stay motivated & write more tutorials. The tutorial is text-based so you can copy the code and paste it as well for quick testing.
Here is how it looks like:
I have tons of other tutorials on gamedev mechanics & developing video games on the website & I'm working on more. You can support me on Patreon (linked on site support page) so I'll be able to fund my work to achieve more better quality.