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