I have begun creating a hex map of Alnwich and the surrounding land. I am largely following the advice of The Welsh Piper and The Alexandrian for my process, not to mention all of the work Rob Conley has done over at Bat in the Attic. I am also going through a lot of the resources Charles has already posted on his blog, Nature Kills: A Hexcrawl for GURPS.
What do I know so far? Well, I am using 5-mile hexes because they mesh well with the average Joe's Basic Move in GURPS. I have also mapped out the bits of around Alnwich I have already described or mentioned. I figure that is the first place to start - putting down what I already know. Once I have that looking good, I'll start expanding outward. That way, I can keep an appropriate level of detail without getting too bogged down in stuff.
I will need a few things for this, though. First, and probably second, third, fourth, fifth, etc., are a good set of tables. These will be extremely helpful in generating hex contents and placing features and encounters. Next, I will need a database to serve as my key. If this grows to a large size, having that information neatly organized will be critical. Better to start now than to have to do data entry later. Lastly, I need more free time. But I think every hobbyist needs that.
I'll try to post the fruits of my labor in the coming days.