An expanded rulebook for technicians in Edge of the Empire roleplaying by Fantasy flight games. To start of, its a beautifull book. I love how FFG design all their stuff to these series of RPG´s. The art, the design of the books, that all goes by threes; three chapters, three new races, three new jobs for the PC´s.
Other then that, this is a good book for a few different reasons. The modification chapter is full of ideas, the expanded rules for slicing can come in quite handy in some of the other books FFG have produced to EoE. Also I think its a good book to use for designing NPCs that can come in handy for the PCs to know. Might not be that much lore in the book, but a lot of handy stuff for worldbuilding.