Replacing radiator and bleeding the cooling system instructions needed?

I found a video of how to replace the radiator. Which is a little helpful, but I’d like to know if I have to do it a certain way. As far as draining the coolant or do I have to plug the lines when I remove them off the radiator. Also, I’m having trouble finding anything on bleeding the air out once I have put the radiator back on. Thank you in advance.