So how to do this ?

I am new to film photography and a noob, just wanted to know what this number of steps are ? And often times I hear “f stop f stop” for expired film what is that ? Please educate me Thank you

I am new to film photography and a noob, just wanted to know what this number of steps are ? And often times I hear “f stop f stop” for expired film what is that ? Please educate me Thank you