My girlfriend and I for the last year want to explore the avenues of marriage the only problem is that I am 17 and she is 15 where could we look into this and do it legaly( getting married )

What is your State of residence and what is hers?

You are already thinking about marriage this soon? Seems a little too early to be getting married. My relationship started when I was 15 and he was 17 we were very much in love and now we are still not married because once we moved in together we have had problems upon problems. Maybe you two should wait and see what happens, you don't have to be married to be together. If you plan on spending the rest of your lives together then what is a few more years to get married.