One of the most useful tools when entering a salary negotiation: Knowing how much your prospective employer pays others at the company who hold your would-be title. It’s also helpful to have a sense of what you are worth in the labor market. In other words, what would competitors of your would-be employer pay someone with your level of training, skill and experience?

All of this information is increasingly easy to find. Besides the old-fashioned method of schmoozing with folks who work in your chosen field, there is a treasure trove of salary information online, much of it highly specific and lots of it free of charge.