HA is an awesome ecosystem of tried and tested automations, software and hardware integrations and monotiring/notification solutions you will need when building a smart home.
I can help you install Home Assistant on a Raspberry Pi system, inside a Docker container or on one of the official appliances sold by Home Assistant vendor, Nabu Casa.
Whether it's official ZigBee hubs or USB sticks, I can help you with getting a working setup based on Home Assistant and tried solutions like ZHA or Zigbee2MQTT.
It's important to keep security in mind, so as part of smart home planning I can review your home network setup and assist with taking the steps to secure it.