ToME: the Tales of Maj'Eyal

Personally, I was quite surprised at beating the Master at my second attempt (the Wyrmic Cornac I'm playing doesn't handle magical opponents too well,but was stronger than I anticipated), and I skipped through the well written Lore (-i'm only a few weeks into this fantastic game)...from reading this...

Thanks Grey!

Okay, so I somehow managed to escape the Orc ambush and return to the main map, however I can't work out how to get to the other portions of the map...please help