How to connect the camera with an external flash? I am an amateur in photographic equipment, thank you.

The connecting device connecting the camera hot shoe at the lower part of the flash lamp is connected to the hot shoe at the top of the camera. Turn on the power, press the shutter to shoot after the flash is called back. The flash I bought a long time ago can be connected as long as the interface is a universal hot shoe interface. The manual button can trigger the flash function, so it can be used as long as the wiring is complete. If you want to make an off-camera flash, it is not the kind that is directly fixed on the hot boots on the top of the camera. There is a wireless flasher available. The transmitting end of the wireless flasher is connected to the hot shoe of the camera, and the receiving trigger end of the hot shoe structure can be connected to the flash. A sender can correspond to more than one receiver. This kind of flasher can generally be bought in places where flash accessories are sold, and more than 200 domestic products can be bought. Some of them can be connected by wires, but this requires a common interface between the fuselage and the flash. I just looked at the parameters of S 100FS, and didn't mention that this machine has a flash interface other than hot boots. If you want to turn off the flash, you can only use the wireless flash device.