Thank you all for the suggestions!
Unfortunately motifinvesting.com does not accept customers outside the US. I know handpicking stocks is the way to go, but i don't have the skills and time to do it. Since this is my first buy, i think i would rather go with an ETF that is well diversified and (relatively) cost efficient. I don't mind if i get slightly lower returns than market average (however, 2% lower returns is too much, let's hope SRI ETFs will close the gap with time).
So, i guess i will start my investing journey with this ETF. I have found it in XET (EUR), SWX (USD) and LSE (USD, GBX) exchanges, what should i choose? Also, it seems the price is high right now, should i wait until it goes down or buy some shares immediately? I have read a lot about the pros and cons of trying to time the market, but i am not sure what is the best strategy to follow. I have decided to keep my shares for a long time though (even in the case of a bearish market).