Quote Originally Posted by CybrGamr
Should I then slow down on building any new buildings until I can establish a constant source of income? Are their buildings that I should build in the territories I conquer?
Essentially, yes. Follow Vladimir's advice, and raid first until you have a sizable treasury. You don't necessarily have to save up until you reach 50k florins, but you should probably have at least 30-40,000 or so.

Once you do, try and settle down in provinces that already have some sort of farmland, as they're expensive to build on your own (not to mention take a while to construct). As Sensei Warrior and Peasant Phill have already pointed out, Ireland and the lands of southern & central England are the best places to actually put down roots and begin building.