I would like to run a fullnode that synchronises with the mainnet.
I have installed cardano-sl but it doesn’t seem obvious to me how I would synchronise it with the mainnet.
Furthermore, I would like to know where I can find more information on the upgrade to PoS?
Moreover, how is Cardano currently secured, is it through PoA, PoW, a central server or an ERC20 token?
From a developer site, I would like to know where I can find the testnet on which beta features are tested and where I can test the feature set of Cardano.
Lastly, what is the feature set that Cardano offers? Can I deploy smart contracts on it, or does it offer shared security similar to Polkadot or interoperability like Cosmos? Does it have any on-chain governance system?
Also, is there a public chat room where developers and validators hang out?