Some resources to help you getting started with STM32 programming.
Programmable chips such as EPROMs or microcontrollers are placed in IC sockets during prototyping, allowing the devices to be quickly removed from the circuit for programming, then reinserted for testing. Some integrated circuits are extremely sensitive, and may be damaged by the heat from soldering, so are placed in IC sockets for protection and easy replacement if failures occur.
Soldering microcontrollers directly to a PCB can be risky and time consuming. Use a socket for easy replacement of integrated circuits. IC sockets are ideal for preventing damage to IC's from soldering. This socket will seat any 40-pin narrow dip IC. It features a standard 0.100' pin spacing. This is the wider 0.6” (15.24mm) variety so it is suitable for an Atmega32 or other similarly sized ICs.
Your socket may vary slightly from the one in the picture, but it will still be a DIP IC socket.