I NEED INFO ON STARING MY OWN CLOTHING LINE!!!!!!!!!!!!!!!!!!!!!!!!!!… HELP ME!!!?

i want to make my own t-shirts hats hoodies wih my own made up brand name and a ogo. how do i do this and what do i need!!! plz plz plz plz help me!!!!!!!!!!!!!!!!!!!!!!! i need all the info abut it money and all that who to pay plz plz plz plz help!!!!!!!!!!!!!!!!!!!!!!!!!!!!1