This website is home to many webshops that sell almost all parts ever made by Lego! Be aware it is not easy to use...
This is the Dutch online Lego Users Group (Lug). Becoming a member is free of charge (premium options are available) and visiting meetings is very cheap!
This is an international forum for Lego fans!
Extensive and easy to use database of all Lego sets ever produced. Easy to use!
Dutch group of geeks making videos about Comic Con events and all things geek related!