http://yw7nc56v4nsudvwewhmhhwltxpncedfuc43qbubj4nmwhdhwtiu4o6yd.onion/t/second-realm-book-on-strategy/164
The first involves a Temporary Autonomous Zone being set up in secret, hidden from the attention of the surrounding state. While this can work for a while, it is very limited, since eventually the place will become known and additional means of stability required.