A good tool is Smart Asset - NJ. They’ll give you a rough estimate of your take home pay after taxes. Note this doesn’t include health insurance, STD, 401k, etc.

Without knowing your background and career and stuff, there’s no way to tell you whether or not you’re able to reach a higher salary and to what. A job recruiter or other professional may be helpful with that aspect and as far as how to manage your money, you can look into a professional financial advisor as well.