I’m very new to the Star Wars EU but listened to my first audio book last week. Did a Google search of where to start with the Legends books and gave Dawn of the Jedi: Into the Void by Tim Lebbon, took awhile to get into but really enjoyed and highly recommend to anyone who hasn’t read/listened to it or like myself just starting out with the EU.
Here is a link to the wookiepedia site that gave a list of where to start, if anyone is interested.
https://starwars.fandom.com/wiki/Timeline_of_Legends_books#js