Make sure to open up port 41878 (EMC2 p2p port) on your firewall!
You can see your notary address on EMC2 here: https://deckersu.github.io/notaries_addresses.html
This script can be used to generate various kinds of WIFs:
https://github.com/DeckerSU/komodo_scripts/blob/master/genkomodo.php
To build EMC2 (Einsteinium) Core first clone official repo: git clone https://github.com/emc2foundation/einsteinium.git
Default branch with latest release code is "master" so make sure you are on that branch.
Then, in order to build EMC2 Core follow the instructions document found here: https://github.com/emc2foundation/einsteinium/blob/master/doc/build-unix.md