Yes, the navigation isn´t the best there, but it contains useful information, so once you got access to a pc, check it out, especially the companions page, and the tips and hints.
As for your current problem, disband all but 10 of your milita´s. If that doesn´t provide you with enough speed to run from the Renegade Empire Knights, disband even more. Start picking up companions, make the cash by trade and farming the weaker bandit parties. Or if you simply want to do it the classic way, get raped and start over from scratch
Which you´d better do anyways as I am advising to pick up either Sarleon (red) or Ravenstern (blue) for a beginners game. They are the most easy to play and strongest factions (read: balanced, good infantry, top archers, to cav), whereas Fierdsvain is mainly infantry, Empire heavy infantry and crossbows (and the low-tier units aren´t doing much good), and D´Shar general crappy with a few exceptions.
Training skill is your friend, as is the training ground. Grind your fresh recriuts up a level or two, till you got a half your troopers ranged combatants and the other remaining lot useful infantry. Once you hit that stage and got roughly 10-15 archers and 10 infantry, go picking vanskerries. You´ll be able to beat them now if you start with the smaller warbands. Good loot, good money, better equipment for you and your heroes.
Before you reach that troop alignment, scourge the area around Ravenstern. Mystmountain Bandit parties, the ones who have only 1 or 2 Mystmountain Warriors and a lot of scumbags. If you need money, do a quick trade run from Fierdsvain towns up to Poinsbruck and back picking up goods as you sell them, fur, iron, meat and fur. vs. fish and linen.
Once you got yourself started, get some heavy cavalry units either by upgrading sarleon or ravenstern recruits to faction Knights, or by recruiting the various nobles in the taverns and upgrade them to Hero Adventurers or Pendor Knights. And once you got like 5 Knights together with the rest of your army those Renegade bastards are a piece of cake and great source of wealth!