This was a change of pace for me!
I got hooked on the current TV series and eventually found this and wanted to read it for comparison. The book was written in 1978 or so, and has that original Star Wars feel. It wasn't really worth the read. Shallow characters, much better developed in the current TV series. Plot was unsatisfying, again compared to the current thing, though one has to credit this book with the compelling plot of the destruction of most of the human race, although the fact that the bad guys were created by the humans is original to the newer series.
I'd recommend renting the 2003 movie if that idea intrigues you at all.