You are absolutely right -- due to time constraints we weren't able to incorporate a sufficient interactable tutorial, so the best we could do is include a README.txt and hope people have the patience to read them haha.
I had the same thoughts as you on implementing the hovering-function, but I did have concerns on it causing issues when the drugs are bunched up together on the side and it potentially obscuring the other drugs. If we had thought about it for a bit longer, we probably would've found a simple way to implement that, and it would dramatically improve the pacing of the game, as you said.
Thank you for trying out our game and your constructive suggestions!