The latest Star Wars book is a young adult novel that covers a lot of the period between when we last saw Ahsoka Tano in Clone Wars and when she showed up in Rebels as “Fulcrum.” There’s a lot going on in the book, and it’s worth your time to read the whole thing. But as for the Star Wars universe as a whole, there are a few vital things to know.
Source: io9 – All the Secrets of the New Star Wars Canon Hidden in the New Novel Ahsoka