Learn how to manually integrate MQTT devices into Home Assistant when native integrations are unavailable in this comprehensive 29-minute tutorial. Discover the process of adding MQTT sensors, switches, and lights, gaining a deeper understanding of the official Home Assistant MQTT documentation. Explore where to add MQTT entities, determine topics and payloads, create MQTT sensors, handle JSON payloads, and use MQTT Explorer. Master the creation of MQTT switches and lights, and prepare for upcoming information. Access sample YAML code and additional resources through the provided links. Basic understanding of MQTT concepts is recommended before starting this tutorial.