Press F12 in the game to open the console window, type the code and press enter:

gold - additional 1000 gold.
piety - additional 1000 piety.
prestige - additional 1000 prestige
difrules - god mode
fullcontrol - let you control all troops on map (need difrules code first)
nowar - AI does not declare wars
norevolts - Population won't revolt
gold - +1000 gold.