Learn as much as you can, there is nothing wrong with an extra tool in your tool belt. Just another item for your resume.
Always plan your work day out accordingly. It's easier to work smarter than harder.
Before going on an interview, always know something about the organization (i.e. mission statement). Research as mush as you can beforehand. You never know what questions maybe be asked.
The most important aspect of establishing career goals is to start making them. Write down what you want to achieve in your career to have a visual of the work life you are mapping out for yourself. These objectives can be as broad or defined as you make them.
Please remember to be patient. Things do not happen overnight, especially in the manner of pushing through the grunt work to achieve that well-deserved promotion. You may have to spend the early stages of you career biting back curse words and getting dumped on with ridiculously trivial assignments before anyone takes you seriously. Trust me, though, this is all part of the journey. If your chosen career path inspires you to chase a high-status job, you have to start somewhere and somewhere may very well be the bottom of the totem pole.
Networking can take you to the next level of your career. Going to events and meeting people face-to-face is singlehandedly the best way to meet people who can help you with your career.