From the back of the book:
Welcome to the Journal of the Travellers’ Aid Society, your indispensable guide to adventuring in the Far Future.
Each volume is a treasure trove of information and game additions for Traveller, including adventures, new ships, alien creatures from across Charted Space, philosophical musings on the big empires, histories, different takes on familiar equipment, new vehicles, characters to be met in starports, playable alien races, and much, much more...
Amongst the many articles in Volume One, you will find:
Burst Lasers, the midway turret weapon between Pulse and Beam Lasers
Guides to piracy and smuggling in the Spinward Marches
New variants of the trusty ATV that will get you across any rough ground
The Delphinus Starliner, to travel in absolute comfort
A look at the Two Thousand worlds of the K’kree
The Dynchia, fully playable humanoid aliens