Short answers, pulled from the story.
The Star Wars Jedi Apprentice series began publication in 1999 and concluded in 2002. Dave Wolverton wrote the first book while Jude Watson took over writing duties for the remaining nineteen novels.
The series explored adventures of young Jedi Obi-Wan Kenobi and his Master Qui-Gon Jinn before Episode I events. Tahl, a Jedi Knight, also appeared as a key character during conflicts on Melida/Daan and New Apsolon.
Xanatos fled to his home planet Telos where he manipulated UniFy to plunder resources. Cornered and helpless, Xanatos committed suicide rather than face justice.
These books targeted children aged nine through twelve years old with serial plot development that attracted older readers as well. The stories provided background for characters appearing in Episode I through Episode III films.