The green card one gets after getting married to a US Citizen is normally a temporary one for two years and before it expires, you have to file extension for it. You have to file Condition Removal before the green card expires. It has to be filed either together (with your husband) or alone (only if you are divorced) You can do a little search.. from your state govt court info websites. Go to the Family Law Section of Self Help.. As for not having money for lawyers, you can search for Pro Bono lawyers in your area and they can help you with minimal fee (well you have to pay the filing fees atleast)... Getting divorce is easier if you have no children and no joint property.