Preston Station - Past & Present
There are many interesting and useful railway-related websites out there. Here are just a few that I have found.
Preston-related sites
Old Prestonian Though not aimed specifically at the railway enthusiast, David Eaves' website will be of interest to all Prestonians, young and old. There is a page devoted to the railways of Preston, which includes a large number of David's own photos. Recommended.  
Ribble Steam Railway Discussion Forum Does what it says on the tin! For discussion about all aspects of our very own heritage line.
Marsh End Railway A nice website for anyone interested in Preston and/or model railways. Andy's site is about a fictitious branch line in the Penwortham area, which he has modelled. An imaginative "history" and map section give a nice background to the layout.
Tunnel Visions An interesting art project website by Elaine Speight about the Miley Tunnel.
Preston & District Model Railway Society Caters for all scales and levels of ability. The Society's annual Exhibition is held in March and is highly recommended for anyone interested in railway modelling. 
Longton Online Longton's very own website, covering all aspects of the town, its people and history. 
Railway Information and Societies
NEW Buses Train Traction Engines and Tram Blog A blog of 4 types of transport each one a massive piece of history.
An interesting blog site covering Trains, Trams and Traction Engines
The Train of Hope Charity auctions and a steam railtour for 2011, in aid of CLIC Sargent childrens charity.
Poulton & Wyre Railway Society The P&WRS are on the verge of achieving their aim of reopening the mothballed line from Poulton to Fleetwood. Good progress has been made on the scheme which would see Northern Rail operate the line during the week, with weekend operations being given over to preserved traction. Current plans should see trains running on part of the line as soon as 2012...
British Railways in 1960 Brian Robertson's excellent site based on the BR Sectional Appendix. It contains a wealth of information about the rail network as it stood in 1960, detailing stations, signal boxes, distances and line speeds.
The Lancashire & Yorkshire Railway Society A well-run society, which welcomes anyone with an interest in the "Lanky". Their regular newsletters and other publications are particularly good, and hold a large selection of historical material about the L&YR.
The London & North Western Railway Society The society which covers the L&NWR in a similar way to the L&YRS. As with that group, the L&NWRS produce some excellent publications.
The LMS-Patriot Project The home of the project to recreate a lost class of locomotive. All the Patriots (also known as "Baby Scots"), were, sadly, scrapped in the 1960s, leaving the preservation movement without an example of this popular and successful type.
The Princess Royal Class Locomotive Trust Custodians of 6233 Duchess of Sutherland.
The Railway Corespondence & Travel Society The Lancashire & North West branch of the RCTS has regular meetings at the Claremont Hotel in Preston, throughout the winter. Non-members are most welcome to come along.
Strathspey Railway Home of former Lostock Hall resident Black Five (4)5025. When restored, 5025 will run between Aviemore and Broomhill, and eventually on to Grantown-on-Spey.
The Watkinson Trust The Watkinson Trust - custodians of Black Five no.(4)5025 - a long-term resident of Lostock Hall Shed. The loco is currently undergoing restoration
Carnforth Station website The Carnforth Station and Visitor Centre website has everything you would want to know about the famous station which featured in the film Brief Encounter.
4936 Kinlet Hall Group A Yahoo! Group for those involved in, and interested in, the restoration og GWR "Hall" 4936 Kinlet Hall.
Online aerial photos & mapping
Mario Map Run by Lancashire County Council, this site has a huge amount of information, including modern and old OS maps, aerial photos from the 1940s and 1960s as well as the present day.
Google Google Earth is a nice toy, but I prefer to access their aerial photos via the Google Maps page. The current images have a nasty join right across the middle of the station!
Live Local -  Preston Station Aerial Microsoft have Virtual Earth which is a clone of Google Earth. They also have Live Local which is similar to Google Maps but has some nice extra features such as the ability to see high-res source images which haven't been mangled to produce the illusion of a satellite view. The "Birds Eye View" option produces by far the best aerial images of Preston.
Suppliers of old maps
Old Towns of England Although some old OS maps have been reprinted over the years, it can be difficult to find maps covering many areas. Chris at Old Towns has a large collection of maps which are available as crisp digitally restored A2 prints. 
NEW Kevin Delaney's Upmain Foto Gallery Kevin's RailPic site features some superb shots from preserved lines all round the country.
Nettletea There are several Ebay sellers who specialise in vintage railway photographs, but some are more helpful than others. Allan "Nettletea" Wood is amongst the best.
Deva-Bob Another recommended Ebay photo seller.
Railways of Huddersfield Neil Dimmer has supplied several 1980s photos used elsewhere on this site, but he also has a number of websites dedicated to various railway subjects
Deltic 21 Photo Site Rob Maynard's site has lots of nice photos - not only Deltics, but many taken at Preston over the last few years.
World Steam Locos and World Modern Traction Pictures Keith Till has provided some interesting photos for this site, taken in the 1970s. Keith's Fotopic site has an interesting selection of photos across the railway spectrum.
The Ian Birch Archive Just how I remember it !
Ian has shared his photos of Preston in the early/mid 1980s. They show just how busy it was back then with more blue locos than you could shake a stick at!
Carl Hodginson Carl has a cracking fotopic site with photographs covering mainly the North West over the last 20-odd years. There are many photos of Preston in amongst them with an emphasis on the latter days of rail blue and beyond.
Northwest Railway Photography Mike Birtles' site is updated almost on a daily basis, with bang-up-to-date, high quality photos of the Preston railway scene and beyond.
Old Rail Scene Scans Also from Mike Birtles...a fascinating gallery of BR Blue era photos, which include some shots of Ladywell and Preston.
Andy Stuart's Fotopic Andy Stuart's Fotopic site includes photos from around the North West, including Preston, Dating from the present day back to the 1980s
YouTube Video
David Michael's Videos A nice YouTube channel which has plenty of Preston material.
Railway Book Suppliers
Martin Bott Has a book shop in Horwich, Bolton, but also has an excellent on-line shop.
Nick Tozer Another good on-line book seller, based in Huddersfield, who also attends model railway exhibitions.
Classics in Brass Producers of framed brass engravings, including 6233 Duchess of Sutherland, and 60163 Tornado.