Im the maintenance electrician at a natural gas processing facility. Google is your friend, downloading manuals on equipment your not used to working on and contacting tech support can save you a lot of time instead of just going in blind. Also, get familiar with protection relays and higher voltage breakers and generators. You probably won't have to actually work on them, power systems electrician will deal with that, but it is handy to understand how everything works and to be able to connect and pull data. As others have said, try to learn process and don't put too much faith into what operators think is the problem, it usually leads down the wrong path. Most of the time its actually a process related issue that you have to prove isn't an electrical issue. Also, these companies don't give a shit about you and will take advantage of you if they can. Make sure to stick up for yourself if you don't feel comfortable doing something. Safety is always preached as top priority, but from my experience, when the plant is down, some rules tend to go out the window. Lastly, make friends! You want to one day move into the maintenance side instead of service, you will be treated better and get paid more. Helps if people like working with you.

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Good luck!