Pleas if girls would care to help I will choose the best help ?

My name is Edward I am a boy I wish to be a girl and I really do wanna be a girl I have my female friends call me serenity or isabella and any thing girl related I wanna know how to be a girl how to act everything a girl should know i wanna know cuz idk how to put make up oh I wear girls panties I love wearing them I have a wig and one dress my family don't know so I keep everything in a backpack I don't wanna tell them cuz.I don't want them to know and think I'm gay cuz I'm straight so when I'm alone I dress up put lipstick put on my panties high heels paint my nails but the problem is I only do all this when I'm alone at my house if I was to dress as a girl and go in public I would get notice fast cuz idk how a girl walks or how a female really acts I wanna learn I'm trying to but now one helps me I wish to find a place that sells tutus but idk what place sells them and I don't wanna by dresses cause I might hav to throw them away if my brother gets close to finding them his friends found out and laughed and they told him but doesn't talk about it so I don't think he beleives it but there some times where he sais "I hate tranural" or "if your a crossdresser I'll kill" he said these things to his friends but only when IM in the room so he makes his message clear :( he almost walked on me crossdressing and my mimed borrows my phone one day and found out I wanna be a girl and now thinks I'm gay I yell at her and tell her I'm not but 1 year past and I think they forgot about it but I need to know what to do to act like a female and how a propper girl acts hmmm how" lady like" you can say some people laughed at me when people at school found out guys and girls laughed at me and no girl has helped me I thought they would but no they didn't :( pleas only girls help and no bad comments pleas any tips pleas leav :) if wanna talk leav e-mail adress and I'll MSG you pleas and thank you