It sounds like you're a student photojournalist, but you are interested in learning more about the business side of things. That's good. In my experience, photojournalism majors should graduate with more knowledge of how to make a living as self-employed business owners, since the traditional avenues for employment (newspapers, magazines) are non longer as viable.
There are a lot of resources out there, but I'll give you just three (you're graduating in just a couple of months, so focus is important):
John Harrington’s Best Business Practices for Photographers:
John has a lot of gems in here, relevant to photojournalists, wedding photographers and commercial photographers. Well worth a place on your shelf.
ASMP Professional Business Practices in Photography
I belong to this organization, but you can just buy their book. Learn about copyright protection, a lot of legal stuff and pricing your work. Great stuff.
Also, John Harrington’s MORE Best business practices for photographers:
Amazon.com: MORE Best Business Practices for Photographers (9781305094055): John Harrington: Books
I've not read this one, but it looks good.
Books will only get you so far. You ideally will have already done a free or paid internship at this point. If not, you should start looking for a mentor in the field. Someone with lots of experience that you can learn from--business skills, marketing skills, photo skills. You might need several mentors. You may need to look for these folks outside of your geographic area, because of the competitive nature of photography. You need to make it easy for them and worth their while.
It's a different world for young photojournalists these days. There is opportunity, but you have to be more proactive than ever before. Don't wait until you graduate....start right now.