From the publisher's blurb on DriveThruRPG:
It’s ever been a loaded word among vampires. Jyhad is in force everywhere from lofty, perfumed Elysium to cloying, smoke-filled blood feasts. Jyhad’s the eternal game played by elders, Methuselahs, and worse — it’s the agenda of beings so utterly beyond humanity, one such as yourself could scarcely understand its movements.
Luckily for you, you’ve picked up a copy of my diary. With my help you may just take a step on the first rung of understanding. Information worth having is information you must earn through blood, and oh, how I’ve bled for what’s contained within these pages.
Beckett's Jyhad Diary serves as the definitive book of setting and plot for Vampire: The Masquerade, containing 30 chapters spanning different geographical regions, encountering vampires of every clan, profiling obscure and profound segments of the mythology, and providing countless story hooks on every page.
Masterfully written by the likes of Neall Raemonn Price, Joshua Alan Doetsch, Myranda Sarro, Steffie de Vaan, Malcolm Sheppard, Alan Alexander, Renee Knipe, and Matthew Dawkins, Beckett’s Jyhad Diary is as fascinating to read as to use for your game Chronicles.