You are eligible for instate if you have lived here for 1 year. Also, grants are competetive money for doing particular scholarly work and if you mean some college financial help it is available through financial aid office in the institution you are interested in. As you already have a bachelor's degree my suggestion would be to get financial assistantship through professors in your department of interest and if you have job experience in your area of study that helps. For this you have to apply to graduate school of interest and talk to professors (most good schools require you to have GRE for graduate study).
All the best.