If you're like me and are in a major SW mood after watching Obi-Wan and want to read some great comics that take place in that same post-ROTS era, now is a great time. Marvel's been really been pumping out their Star Wars omnibus's, and they're amazing, high quality hardcover collections.
If you're into disney canon, then Charles Soule's run on Darth Vader is a must read. Happens directly after ROTS, and features Vader tieing up many loose ends around the galaxy, as well a training the Inquisitors. He also builds that castle fortress on Mustafar you see in Rogue One.
Vader by Soule
If you're like me and grew up with Legends continuity and much prefer it, Marvel just released an omnibus of the first half of the iconic "Dark Times" series, with the second coming soon presumably. Lots of Vader carnage in this one. He don't hold back. This one also has an interesting depiction of the Republic-Empire transition, real interesting stuff.
Dark Times