Short answers, pulled from the story.
The first issue of Star Wars: Empire landed on newsstands on the 4th of September 2002. Dark Horse Comics published this monthly series that ran for exactly forty issues until its conclusion in late 2005.
Randy Stradley wrote the two-part story arc titled Princess Warrior which first appeared on the 5th of February 2003. Paul Chadwick developed the four-part Darklighter arc with its first issue published on the 21st of May 2003.
Commander Akobi led Imperial forces against a rebel cell on Ralltiir and ordered bombers to attack despite sensor failures. The bombers accidentally destroyed a Med Center killing scores of civilians before the Imperials covered it up and made Akobi into a hero.
Boba Fett appeared in Sacrifice the seventh issue originally published on the 9th of April 2003. This specific issue was later collected by Boba Fett: Man with a Mission for fans of the bounty hunter.
Thomas Andrews penned In the Shadows of Their Fathers which ran from February 2005 through August 2005. These writers expanded the timeline between Episodes IV and V by creating specific stories that filled gaps in the official chronology.