If you have gone through part 1 – How to buy Nxt crypto-currency, or you already have Nxt and wish to exchange them for Tree Coins, you can start here on this post. The idea is to open ESI account so we can transfer the TreeCoins (TREEZ) to you.
Goto the ESI client (https://esi.treetangle.org/index.html). You should see a screen, similar to the Nxt client (except for the logo).
You can log in with the same account number as your Nxt account, or you can create a new user account number. When you enter the account number, you will be greeted with the same dashboard that you have in Nxt client, except you will be in a different ledger with different currencies. From here you may receive the TREEZ transferred to you.