The Rifter #1 is a 128-page introductory issue featuring G.M. tips from Erick Wujcik, new superpowers for Heroes Unlimited, Rifts New Roman Republic, Rifts City creation rules, KODT strip, fan fiction, and Nightbane Morphus tables, Optional Faction (the Inlustris) and O.C.C.s.
I've always loved the Rifts Role-Playing Game...as well as most of the other games produced by Palladium Books, and the Rifters were a great idea: fan submissions, optional material, rules addendums, FAQs, etc...they're great! :)
Personally, I found the City Creation rules the most useful, and I love the addition of the Knights of the Dinner Table comics, as well.