Use MQTT

[wtomee]

Hi!

I'm pretty new in coding, Raspi and IoT. So I would like to store the data in a mysql db. I have read about MQTT, I installed on me server the mosquitto server and client. I wrote the IP address, the username pw and the feed(is the topic right?), turned on the mqtt and sub on that topic. Didnt get anything. I did something wrong maybe or I just dont understand whats going on with the MQTT. Can you please make a quick guide how to get data from the GUI with MQTT and store in MYSQL? Thats my first time on GitHub aswell.