What are things you like ?? I could say read a book from one of the reams of famous german writers: Lessing, Goethe, Schiller, Heine, Gebrüder Grimm, Fontane, Hesse But the lyric is maybe not suited to present daily use. However, I recommend you Hermann Hesse "Siddhartha" or Johann Wolfgang Goethe "Faust".

goethe,bertold brecht,

I can recommend most books by Andreas Eschbach, especially "Das Jesus Video", "Eine Billion Dollar" (=One Trillion Dollar!) and "Solar Station"

Frank Schätzing (vor allem "der Schwarm")

The authors "various styles" recommended you are really famous and distinguished, but sometimes not very easy to understand if you just started learning German. I can recomment you some "easier" books if you tell me which sort you like to read!