Well, When playing as Rome, you should expand as fast as you can. Minimal garrisons (except border towns), always build new stacks to get new cities, coastal cities are best. Enslave cities populance, so you will get a slave resource. Also try to fight one or two factions at the time and get trade rights from the others, money will flow. When playing Julii, I always have very little money, but once you get to Greece (Brutii gets there right away) you won't have financial problems. Just get a huge piece of mediterranean coast and do naval business (trade rights, good harbors). Plus markets, roads, mines and farms, but you already knew that.
