How to start with Zigbee?

Regardless of Zigbee application/setup recommend reading and follow these general tips → Generic best practice tips on improving Zigbee network range and general stability · zigpy/zigpy Wiki · GitHub

Same advice in ZHA integration documentation, CC2530/CC2531 do not support Zigbee 3.0 devices because they have old obsolete hardware and outdated end-of-life firmware so are no longer recommended → https://www.home-assistant.io/integrations/zha#known-working-zigbee-radio-modules

Similar notes in README.md for community firmware → https://github.com/Koenkk/Z-Stack-firmware/tree/master/coordinator

Suggest just buy the CC2652P-based ITead’s “Sonoff Zigbee 3.0 USB Dongle Plus” (model “ZBDongle-P”) based on Texas Instruments CC2652P +20dBm radio MCU now sold for $19.99