Hi Patrick,
Good to see another N gauger potentially joining our ranks!
I'll try to answers some of your questions, as best I can...
A good book to help me not need to ask stupid questions about LNER in the future?
For me a good quick reference book is the 'Modellers Guide to the LNER' by David Adair (ISBN 0-85059-831-1). It covers a lot of aspects of the LNER in general and some good modelling tips (for OO/OH but applicable to N gauge). Not sure if its in print but pops up on Ebay from time to time.
Best source to buy rolling stock from North America?
Not sure I can help here, however places like Hattons (
www.ehattons.com) offer a mail ordering service.
A couple of good starter locomotives?/Some good starter coaches? Wagons?
The LNER in the 1930's hasn't been that well served by RTR manufactures - although the situation is improving. Currently available in LNER colours are a V2 (2-6-2), B17 (4-6-0), A4 (Mallard, etc) and an A3 (Flying Scotsman, etc).
All are nice models, although the A3 and A4 are older models without the same level of details as newer offerings. Also the A4 isn't strictly in 1930's condition as the side valances have not been modelled - although these can be fitted with some patience (see the modelling board). Also the A3 represents the class in its later conditions and needs some work to turn it into an A1 or early A3, again it is possible to do.
In additional Union Mills (a small Cottage/Garage business, no webpage yet) produces small batches of RTR locomotives. These will cover some of the smaller tender locomotives such as J11, J25, J38, J39, Q2, B12, D? I'm sure I've missed some and someone will correct me - the models aren't as detailed as modern Dapol and Farish offerings but are very nice and have excellent haulage capabilities!
There are no RTR tank locomotives of 1930's LNER prototypes currently available, although you might be able to find an old Farish 'Holden Tank' (roughly base on a J69) and the J94 is available (although not used by the LNER until the mid 1940's). However there are some good kits about but something for later perhaps?
Coaching front, Dapol have released four types of Gresley mainline stock but are only available in Teak in a box set with the B17 locomotive. However later liveries are available and, again, can be repainted to represent 1930's condition.
I believe that most goods stock available in N gauge is a bit generic but looks good in a long train - most LNER goods stock would have been simply lettered N.E. although other companies stock would have found its way onto the LNER lines.
A good rural station or village to model for a first module? I'm thinking something very simple, with mixed passenger and freight service.
Where to start - personally, I like the mainline and I am/will be modelling Hitchin in Hertfordshire, however I've always though that Louth looked like a good prototype. There is a series of books covering the old Great Northern Railway engine sheds (sorry can't remember the ISBN or exact title
) which provides a nice track plan (from historic maps) for most of the locations.
A nice, small but interesting bridge or tunnel or something along those lines for a second module?
I'm sorry but I'm not sure I can help here - although I'm sure someone else can!
I hope that the above is useful to you, however if you have any other questions then you can usually find someone to help on this forum!