You get a lot out of rogue trader, it’s a pretty solid start. As for the books, I would not start with the Horas books because despite the fact that they are canonically the first books you kind of need to know a bit to understand what is going on.
Eisenhorn and Gaunt’s ghosts are to two best introductions. Not a lot of xenos in those ones, but you get to see the scope of both the Imperiam and Chaos forces.
Also, it’s okay to cheer for the ghosts.



The leaders are not endager and everynthing iran does in retaliation only makes trump’s supporters become every more violent. In Facebook they are outright calling for the mass murderer of Muslims within their own country.
Of course Facebook does nothing to stem this.