How much NEU / ETH will I receive once the platform goes live in I will additionally ETH ETH to my account
Once the Plattform is live and I am able to invest in companies on which rate will my ETH become exchanged to Eur-t.?
You will always invest according to the current value of ETH vs Euro. NEU issuance curve is described in the whitepaper, so you can calculate how much for each Euro you will get.