The Thrawn trilogy is a good start. It is a three book series with the first book being "Heir to the Empire", segundo one "Dark Force Rising" and the last one "The Last Command". This series is about the New Republic. Other good ones are the Clone Wars Series "Clone Wars:Gambit". There are two libros in this series, "Stealth" and "Seige". Obi-Wan and Anakin are the main characters in this one.
If you’d like to read about what happened right after “Return of the Jedi” events, take “The Truce at Bakura” por Kathy Tyers. If tu want a good book about Anakin and the Clone War, try “Jedi Trial” por David Sherman and Dan Cragg. It’s a pretty good war novel.
Well, everyone of us has his own favorito! estrella Wars novels, and it appears to be that opinions of fans rarely coincide. :) Everyone has his own favorito! characters and looks for something special, something that is consonant with what he feels inside. So I don’t dare to recommed tu the libros I amor most :) I just have to say that when tu start lectura estrella Wars books, some things can puzzle you. For example if tu take something from the middle of Yuuzhan Vong War times without knowing what happened before, it could seem to tu a bit strange o unexpected. Here is the chronology of the books: link Hope it will help.