I think at this point in time the last thing you need to be thinking about is working a horse at liberty. And as far as the bond thing...some horses are friendly and will follow you around and others are more aloof and see you as not all that interesting unless it is to their benefit, like if you have food.
How old is this horse? I am not a fan of lunging. And if you don't know how to ask the horse to move around you, well, you both will be frustrated. I would get some help with this if you can. I believe working with an instructor will get you results faster than video instruction. In the meantime, make sure the horse leads well, not dragging you or you dragging him. On the ground he needs to back up, move his shoulders or hind quarters over when asked, pick up his feet...all sorts of things to work on here. You can walk him over poles, a tarp, around obstacles. Then do all of this under saddle. All of this will help you get better acquainted with each other.
It takes time to created a good working relationship. Be patient with him and yourself. Be consistent. Get help when you need it. And understand that you will never stop learning...it's an ongoing process.
If you ever find yourself in a fair fight, it's because your tactics suck. ~ Marine 1SGT J. Reifinger