How come no one has writen a detailed guide on charging? I see a bunch of noob system guides walking you through the proceses of building your first phasechange setup but there not much on the whole vacumme and charge process... Is it alot easier than I think it is or is everyone lazy

I've talked to Chilly1 a few times about recovery tanks and if there so important how come I NEVER hear anyone talking about them? Is there some trick to not needing one or something?

And liquid refriderant:
The propane torch canister I have. Is it a gas or liquid inside? When you empty the system of refridgerant do both kinds come out? Would liquid propane like kill me if I touched it?