Hey Stanley,
I wouldn't know where to buy hormones other than a pharmacy; it's a controlled substance here so a prescription is required.
Getting hormones and surgery under 18 has only been possible in very progressive regions, it's not the global norm. If the local trans organizations offer a support group or other youth services, I recommend looking into this. Though you may not be able to access hormones and surgery right away, the support would likely be pretty helpful and could help you prepare and plan for the steps of your transition.
I'm really sorry that this is so frustrating!
Joshua