I have seen that the HBD APR has been lifted to 12%,(yeey :D) unfortunately I have not found any previous news about this. Was this announced or how are such changes agreed by the witnesses?

This is a witness parameter, so it can change at any time based on what the top witnesses signal.

i need to lern more about hive and the ecosystem what would you recommend for a deep dive?

I would browse posts tagged with #hive (/created/hive) and read what you find interesting. You can check out Hive.io for some more information, especially if you are looking for developer information.

A lot of it I personally learned from experience by interacting with the blockchain and people.

Do you have specific questions?

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