Pick that book back up and start where you left off. As someone who read the first edition and these days writes Ruby for a living, I can confidently say that the lessons of Code Complete are universal. The wisdom in that book about good code construction - quality naming, decoupling, how to structure a function, etc. - will stand any programmer in good stead. I still refer to my dog-eared first edition regularly.
As far as books on practices which pertain more specifically to Ruby: first, every programmer should have a copy of "The Ruby Way, 2nd Edition", by Hal Fulton, on his or her desk. Second, while I haven't read it yet, I have heard good things about "Ruby Best Practices".