The World of Eberron

Here are two good places to get started for information about the world.

http://en.wikipedia.org/wiki/World_of_Eberron

http://eberron.wikia.com/wiki/Eberron_Wiki

Here is a map at the Eberron wiki. The wiki is a great source for maps, including ones for individual areas.
http://eberron.wikia.com/wiki/File:D%26D_-_4th_Edition_-_Eberron_Map_Khorvaire.jpg

Once you get there, click the map to enlarge it.

We're starting out in the town of Vulyar, in southern Karrnath, near the border with the Talenta Plains.

Here's an excellent map, which I will most likely use as the campaign default. You can get it cut up in smaller chunks as well.

http://www.wizards.com/default.asp?x=dnd/ebwe/20041206a

Common Inn Fare Around Khorvaire
This list shows an average. Exact items vary widely by location. One can often find more expensive fare in more populous areas, and sometimes cheaper fare in the worst areas of larger cities.

Ale, gallon 1 ep 10 lb.
Ale, pint 1 sp ·
Beer, gallon 4 sp 10 lb.
Beer, pint 5 cp ·
Bread, per loaf 2 cp 1/2 lb.
Cheese, brick of 6 sp 5 lb.
Eggs, pickled, cask 12 sp 20 lb.
Fish, dry salted, barrel 40 gp 60 lb.
Inn stay (1 night)
Good 5 sp ·
Common 3 sp ·
Poor 1 sp ·
Meal, good 5 sp ·
Meal, common 3 sp ·
Meal, poor 1 sp ·
Mead, pint 5 sp ·
Mead, bottle 12 sp 1 ½ lb.
Rations, unpreserved (per day) 2 sp 1 lb.
Rations, trail (per day, preserved) 5 sp 1 lb.
Wine, common pint 5 sp ·
Wine, common bottle 12 sp 1 ½ lb.
Wine, good pint 10 sp ·
Wine, good bottle 22 sp 1 ½ lb.

Here are the main sources I'm using to determine the look and feel of this iteration of Eberron. You can pop them into Google Images, but I'll also connect links to many of them.

Eberron
Warhammer FRP
Studio Ghibli (brobdingnagian airships, constructed servitors, the darker elements of Nausicaa, Castle in the Sky, and Howl)
Lovecraftian pseudomythology, and Dreamlands
Andy Brase - http://andybrase.blogspot.com/
Chuck Lukacs - http://www.chucklukacs.com/
Vinod Rams - http://www.vinodrams.com/homepage.html
Philip Straub - http://philipstraub.cgsociety.org/gallery/176368/
Rico Holmes - http://www.ricoholmes.com/ [nsfw, partly]
American McGee's Alice - http://www.ea.com/alice
Brazil, Time Bandits and other Gilliam works

Some info about airships that all characters would know:

Airships in general are uncommon (in the sense of 'between common and rare'.) The more sea-going ship and boat-like airships are a common example of this sort of vehicle, but definitely not the preferred type. They were the earliest sort, many of which were converted to air travel from actual maritime vessels. Much more preferred are the larger, sturdier, and fully enclosed sort typified by the works of Miyazaki, though lacking wings. This type are far louder in operation, however, due to the greater power and number of the constrained elementals, the abyssal moans and screams of whom can prove highly disquieting.

Goods and Services at The Blacktree Inn, Vulyar

Ale, per pint 8cp
Beer, per pint 4cp
Wine, per glass 12cp
Wine, per bottle 4-8sp
Liquor, per glass 8-10cp
Brandy, per glass 16-32cp
Tea, per cup 4cp
Breakfast 1-2sp
Dinner 2-6sp
Supper 2-6sp
Dormitory, one night 2sp
Dormitory, one week 12sp
Dormitory, one month 40sp
Private Room, one night 8-10sp
Per additional person +2sp
Private Room, one week 48-60sp
Per additional person +12sp
Private Room, one month 180-250sp
Per additional person +50sp
Stabling, one night 2sp
Stabling, one week 14sp
Stabling, one month 50sp
Vehicle Storage, one night 2sp
Vehicle Storage, one week 12sp
Vehicle Storage, one month 40sp
Goods Storage, one night, per square yard 4cp
Goods Storage, one week, per square yard 8cp
Goods Storage, one month, per square yard 2sp, 2cp
Private Storeroom, 10 x 10 space 40sp
Riding horse rental, per day 6sp, 25gp deposit
One-horse, two-person carriage rental, per day 18sp, 100gp deposit
Two-horse, two-person carriage rental, per day 22sp, 100gp deposit
Two-horse, four-person carriage rental, per day 28sp, 100gp deposit
Two-horse, four-person coach rental, per day 40sp, 100gp deposit
Four-horse, six-person coach rental, per day 54sp, 100gp deposit
Coachman rental, length of job 26sp