Many character cards contain these words in bold print, I understand what some of them mean like press, reservist, and concealed but I'm still unsure about others like loyalty, dual-loyalty, leader, evasion, substitute, cosmic, will power, etc..

Help?

I also managed to get octgn running if anyone's up for a practice game...

I recommend downloading a document called the Summary of FAQ Terms here. It's updated each set so that it has current information and definitions of each of the keywords of the game, and some of the other mechanics that have been added.