[coreboot] I need you help.

Hello.

I would like to install Coreboot on my Lenovo x230, but I don't know how
to do that. Please tell me how to do it.
I have done a lot of research on my own, but I just can't figure it out.
I am not a computer educated person.

I don't have a rasberry pie. Do I need it?

And what are skulls and heads, and what is the difference between them and
coreboot?