You'll get different opinions on this, but what I would say are reasonable boundaries are he should move out of your way when you're walking - move right through him if he doesn't, not around him, don't let him on you uninvited and obviously don't tolerate pecking (excluding accidental pecks when taking food or curious pecks like if you're wearing something shiny). Peck him back with your fingers if he does. If he ever offers you a present don't accept it ever as accepting it is a sign of submission, if he ever wing dances at you pick him up and carry him for a bit. These aren't signs that guaranteed aggression but they are warning signs that things could head that way if handled poorly. What are warning signs of upcoming aggression are excessive crowing when you're around, him flaring his feathers at you (beyond normal fluffing) and him giving you the stink eye. How you show him proper respect in return is don't chase the hens, if you have to do something that will upset a hen put the rooster away, give him treats first so he can score points with the girls by tidbiting them and of course be firm but gentle with him and the girls. Also know that even if you do all that he still might turn out poorly as some roosters will be jerks no matter what you do or don't do and as I said before, everyone has their opinions on how to get a nice rooster and you will certainly find people who have success with different methods. This is just my 2 cents
