First time filer.. Getting a reference code of 1301?.?

i woke up this morning checked the wmr site and it said that my return was processing and give me a reference code 1301.. I called and talked to an agent and she said its because i am a FIRST TIME FILER.. And she couldnt give me any information. I am relieved thats it only that. But does anybody know how long it takes for them to process first time filer returns?. Please answer. Ty.