What are you supposed to do for "pass 2" sections in LFS

I'm trying to build an LFS system but I've hit a roadbloack, what am I supposed to do for the 2nd passes. I thought maybe I had to re-untar again then compile their but that didn't make a new directory, then I thought a build directory had to be made inside the existing folder but that doesn't work out either, then I tried building inside the existing build directory, then I made a build directory INSIDE the build directory but both did not help at all. I don't imagine I need to include code as I'm certain the processes I've used were incorrect. Any help would be very appreciated thanks!