Into the Darkness is a short demo adventure by the Wizards of the Coast team released prior to the launch of 3rd edition.
It includes a four page adventure and a two-page "DM tipsheet" which has a brief summary of the 3rd edition rules. ... [click here for more]
This adventure is designed as an introduction to the world of Eberron and is intended for a party of four 1st-level characters. Adjust the encounters accordingly for groups with fewer or greater numbers. This adventure takes place in Sharn, the City of Towers. It begins, as many incidents in the City of Towers do, with a corpse. A warforged assassin, a mysterious blank book, and an offer from a House... [click here for more]