I'm extremely dumb can someone help me install this on Pulsar (macOS) please please please

[compatib]

Hi my problem is at it says on the tin really x

I know that I need to follow the readme instead of just using the package installer (which throws up issues that others have noted)

But I don't know how to follow the readme </3

I don't know what
3. Enter the atom directory cd atom-hydra
means !
I don't even know how to begin following this instruction and I've been looking on the internet for ages

I haven't got this far but again, i have no idea what
4. Install the dependencies npm install
means either!

Any help will be much much much appreciated xoxo