Hey Rick even though your question is irrelevant with the thread topic, but here is my answer for you, hopefully it will help!!
no idea yet, it seemed there’s no announcement of the estimated date, but you can always check roadmap to see the progress %. They do have 2 testnets online for EVM and KEVM I believe.
Yes, Goguen is all about the smart contract/Dapps and interoperability, which also includes the brand new languages of Plutus and Marlowes.
same as Q1, no idea yet
Yes, most rewards/incentives, I would say 99% of them, will be coming from the monetary inflation.
I believe you can find more useful information at Beginner and Education sections 
:
https://forum.cardano.org/c/beginners
https://forum.cardano.org/c/education
P.S. Please correct me if I’m wrong 