I have 6 one year old BO Hens, 4 6+week old juveniles of which I think 3 may be pullets . One audacious and completely lovable 1 year old Buff rooster. As far as being friendly is concerned, sometimes I wish they had a little more of our Welsummer's aloofness. Not really, but my girls like to mob me when I come into the run and I'd better have something for them in my hands or I will be getting the stink eye from them.
As for training them to get used to me and being handled, I started giving them little pieces of whole wheat bread that I held in the palm of my hand. Dried meal worms work well also but remember, if you are brooding your own chicks, they really don't know what it's all about. No momma hen to teach them, so you will have to be patient. Sooner or later one of the braver chicks will dare to take a peck and that is all it will take to start the 'keep away' frenzy. Patience is your key word. BO's are naturally curious and friendly birds. Once they learn to trust you they will become velcro chickens that are always following you around for treats and will never turn down a pat. Most hens are a little flighty till they start to breed and lay, so once again patience.......and bread........lots and lots of whole wheat bread.