First of all, look around your home and pay attention to the small annoyances you want to deal with automatically. If you have been adjusting the thermostat, you may need a smart thermostat. If you turn on the light carelessly, look at the smart bulb. Are you worried that your home won't be broken into? Intelligent security camera is the future development direction.
After you select a smart home device, you will want to study other home technologies you want to buy to see if these devices are compatible with each other.