depends on your structure that you want to design and also your location, there are some very good books on high rise and similar. However are some good starting points? I would recommend talking to your mentor for good local books/discussion papers.
A multitude of reinforced concrete textbooks and technical articles. Like yourself, I am still looking for "the one" textbook that describes everything that a design engineer needs to know but still haven't found one.
Three things which aren't commonly included in concrete design textbooks include:
Longitudinal (or horizontal) shear
Transmission of axial loads through floor systems
Strut-tie is often poorly covered (in my opinion)