Ed Champion is a remarkable reader, critic, etc. (feel free to add to the list of how remarkable he is), and in this interview he recommends books for writers.
Ultimately, a novelist’s job — irrespective of whether she is writing speculative fiction or hard realism — is to understand how human behavior emerges from systematic consequence. If you can generate an atmosphere based on systematic consequence, then your novel will likely feel “real” even if it is set in a land populated by dancing elves or talking fruit.
For plot structure, “read Richard Stark.” For great openers, Burgess, Cain, and Murray have good examples.