Warhammer 40,000: Core Rule Book

The datasheet breakdown finally makes sense to me—I’ve reread the movement and attack sections three times and it’s still clear. The 88 pages cover the battle round phases without padding, so I actually finished it in one sitting.

Finally, a clear explanation of the battle round phases—I've been playing for years and still had gaps. The datasheet breakdown alone makes building an army list so much easier.