Why did you come back with new account, what happened to your old bitcointalk account? What do you want to learn now that you are here again, can we expect to see you active here for about 2 years or you'll vanish again as you did before? Not trying to sound rude but to know if truly you've come to learn more here. Secondly, what have learnt so far before you left, what do you want to learn now you here, what challenges you encounter in the ecocrypto, can you solve them now or you still get more to learn. It's better you know your stand and be straightforward to studying crypto and Blockchain technology at large.