Some resources to help you getting started with STM32 programming.
The best PCB making method should be the toner transfer, this is a material you must have.
Print it with laser machine, use hot laminator machine or heavy hot iron to transfer the toner to your copper board, be aware to prepare your copper board well with sanding, the last step is etching.
The advantage of using this kind of methods:
Please Note: The paper will be folded for shipping purpose.