Track down your expenses. To soar your efficiency on cutting your expenses, it is vital to keep track of them. Pick one of the numerous expense tracking applications there are around, like Money Lover or Mint, and record every single penny that goes in and out of your wallet. After 3 months or so, you should be able to know where most of your money go and what can you do for that.
Change jobs and employer. Once you've gotten some experience under your belt, consider finding a new job. By changing your environment, you can increase your pay and experience different corporate cultures. Don't be afraid to do this several times. If you're a valued employee, it's also likely your current company may offer you a raise or other benefits if they know you're looking at leaving.