How do I apply for a VA Streamline Refinance?

Hello all,

Last year, I purchased my house with a VA loan, and even though I am happy with it, I have been hearing a lot about the benefits of refinancing. I’m wondering when I’m allowed to refinance my VA loan and if there are certain stipulations that would have to be observed. Also, since buying the house, my financial situation has shifted somewhat, so that makes me curious whether that would also alter some of the options I have. Thanks!