I must be stupid

I follow tutorials for everything to do with programming and computers, but I can't seem to get anywhere with them, and when I see just one error, I have the tendency to give up trying any further.

So, I am begging for assistance on the most basic of levels, if possible. PLEASE someone, anyone, tell me like I'm 5 years old, how do you install tailwindcss into VS Code?

I just followed the steps of a tutorial for this process from 9/21, and things seemed to be going well, until things didn't for me (which seems to be the case for every single tutorial I've followed in the past)