Getting Mariied?!

Hi everyone! I`m really hoping someone can help. My boyfriend and I have been together for quite awhile. He left in March for Basic Training in Fort Sill, OK. I have been dying without him! He called yesterday and said he wants to get married! NOW!! Haha. We have talked about getting married many tomes before he left, and both knew we would someday. He wants to just go to the courthouse when he is done with basic, can we do that? what do I need to know or do?