Thank you @ OGM4ME and ra213 for this information. But if nobody is mining who computes the blocks? I thought this is necessary for transactions. Ok joining a staking pool seems a good opportunity but if i prefere to have my coins in my wallet is there a way to do this with a linux wallet. Does anybody know how to build it in detailed steps or has even e ready to use linux wallet for Aerium coin? It seems i'm not fit enough to do that on my own.
Many thank for your help
I am not familiar with Linux wallets but as for the mining, PoS is a type of mining. With this, you can (without having to give up your computer functionality) validate block transactions according to how many coins are in your wallet. So instead of using a GPU or something, you earn coins as interest for them being staked in your wallet. The pool comes into play when people can't put a large amount of coins in to stake, since you earn faster the more you have. The pool let's plenty of users add their stakes together and therefor collect interest faster than if they had been solo staking with a small amount of coins.