How much would it cost me to open a shoe and cloth retail store ?

hi i am 15 years old i am working i am planning to open a retail store that sales nikes jordans supras and lots of other brand and i also plan to sell cloth i would like to know how much would it cost to do this and i also wonder where do i get the shoes and cloth do i buy them from a warehouse? im not sure so can you guys explain me the procedures step by step please :) thank yoou and i would like it to look a little something like this one section with cloth an the oother section with shoes how much will this cost and where do i get the shoes and cloth ?