Of the advice that I could give only one: to visit production more often, to ask the workers about the nuances of production, if you become a design engineer - to visit the chief technologist's department more often, to study various metal processing technologies existing in production and the possibilities of reducing the cost production of parts. For example, I tried to select ready-made tooling for the design of my products - that is, there was no need to manufacture a new one.
Every engineer, to one degree or another, deals with equipment, technical objects and technological processes. Therefore, interest in technology, a tendency to practice with it are one of the main conditions for the success of the activity.
And you can also download my selection of literature for engineers on Yandex Disk for free, which will be updated periodically. https: // yadi. sk / d / UrLCzGP13RfFEG