The link to the maps of Misaki in my previous post, although no Enlish version is available, somehow has a menu bar in English.
By clicking each of them, you can see a lot of photos of the nature, historical monuments, festivals and local speciality. Even if you cannot understand Japanese, you can see a lot of places of interests. I'm sure it gives you some ideas.
Thanks for the train timetable link. I've just thought of quite a big problem I'm going to have when I'm over there... all of the timetables are going to use kanji for place names aren't they?!! I better get learning!!
Is there a group of common kanji used for place names that are worth learning (like for people names)?
As far as the timetable is concerned, there are only two kanji you need to know:
岡 : taken from 岡山 Okayama - all trains are marked 岡、 which means all the trains are bound to Okayama.
快 : taken from 快速 kaisoku, which means express train. Trains marked with this kanji are express train, those without is so-called "local train" which stops every station on the line.
As for a group of common kanji, some kanji used commonly at certain places (like 入口 for entrance or 出口 for exit), I don't think there are groups of kanji useful for people's name or name of places to remember - proper nouns tend to have special pronunciation. Better remember the particular kanji for the place you're going to live or people you're meeting everyday.
As far as JR lines are concerned, usually they have signs in English as well as in Japanese (in big cities in Chinese and Korean as well.)
Misaki town seems to be rather a small place, you might have to drive as Glenski mentioned, though it depends on the place you're going to live and how far away from school you're going to teach. I believe you have no problem in driving on the left as you're from UK, but you need to get used to the signs on the road in Japan. (Bycicle is an option but not always convenient, especially in bad weather...)
If you enjoy country life and want immersion in rural Japanese life then Misaki would be interesting. If you want nightlife, then maybe bigger cities would be better for you...