Transport Tycoon Forums
The place to talk about Transport Tycoon.
Open TTD
An open source clone of the Microprose game "Transport Tycoon Deluxe".
Transport Tycoon Semi-FAQ
If you need more, more, more information and strategies about Transport Tycoon.
Owen's Transport Tycoon Station
This site is home to a number of resources and tools for Transport Tycoon.
Oliver Keating's Transport Tycoon Deluxe Site
Very good page with lots of new hints and strategies.
The Church of Transport Tycoon
Nice and funny site, some good info on the tips page.
Transport Tycoon (deluxe) Appreciation Site
Good page, not much info here.

Transport Tycoon Deluxe Patcher
By Josef Drexler (excellent program, enables some editing and some cheats which greatly enhance gameplay).
Transport Tycoon Deluxe Alter
By Dan Mullin (excellent program, very much options).

Chips & Bits
The largest online computer games store.
Metia
Provider for this website.