Offers trackguides, standings, top times, and setups for download.

[8.9/10] Reviewed by: Stephen Poole. "...arguably the most intense racing experience ever seen on a personal computer." Also includes screenshots and reader reviews.

Official site

Tips on everything from breaking to setup configuration.

Compares your best lap times and "handicap" with other GPL players around the world. Sign up required.

(In English and German)

A league offering online races, top times, rankings, and forums.