Check out some great videos of past math regents problems being solved with all the steps. It also shows how to correctly set your graphing calculator, which will save you time. As the regents gets closer (see side link for your regents schedule), this is a great way to do some extra studying and review.
For Algebra1 go here
For Algebra2 go here
For Geometry go here
Also remember that teachers are staying after school to offer help!