Converting a propane grill to charcoal or wood BBQ smoker with heat control on the cheap

So have an old propane grill? Or maybe got one for free like me? Well lets go ahead and make it into a smoker or just standard charcoal grill. With that said let's do it the right way and add vents so we can control heat. Oh and did I mention this can be done in a few hours and for next to no money. Well lets do it