Magento and Head.js how to make friends?

Question

Magento

Hey!
Given - Magento 1.8 + VarnishCache + Memcache
I really want to make friends with Magento and Head.js, or something like that.
I found the manual www.tegdesign.com/super-fast-magento-lessons-learn...
but I don’t understand where exactly this Guru shoved his code, especially since I don’t see head.js in his code at point-blank range on his website some kind of //assets.bulubox.com/js/bulubox/bbhead.min.js?async&0.0.3 and didn’t google anything about it Someone
will help to describe step by step what file to stuff into what file, what folder to upload and what sequences so that everything will work later?
I can read, copy-paste and clear the cache. Female gender. Not a programmer.