So to start off I'll explain a little about myself!
name is Kyle, I'm 19 and a full time college student. I weigh ~175 pounds and I'm 5'9" (I'll post a pic when I can) semi-athletic build. I am in second semester of first year of college and I'm enjoying it quite a bit! Maybe too much though!
I want to start losing some weight to get back to where I was in highschool, ~160 pounds. I wouldn't mind gaining some more muscle mass and losing the fat I have now. Since college I've noticed some gain around pectoral areas and lower quite a bit. I want to get into shape and start being more motivated. I've had a pretty lazy life and I hope through losing weight and hitting the gym that I will get out of lazy personality and not be so docile. I hope that it will change work ethic completely and transform life. I know it will have to be step by step and that it won't happen all at once.
So - being on campus I don't have too much of a good choice of food and being a college student not much money to spend on foods either. There is a salad bar, soup station and sandwich station in the dining hall, obviously junk food station and "home-cooked" meal station. They give nutritional info with what they serve but the questions I have is - what do I need to be eating? What are healthier choices I can make? I drink soda quite a bit and have had problems trying to quit, but now I'm going to be completely serious about cutting soda out of life.
On campus we have a rec center where I will occasionally go and do some weights here and there, I never know what I need to be working on and don't know any workouts that would be good for me. I played sports in high school so I'm not shy with them nor inexperienced. There is a running area friends and I will go run maybe once a week, it's roughly a 1.45 mi run.
I eat whatever sounds good and drink soda profusely. Is Gatorade just as bad as soda and okay to drink? I'd think not because of the sugar content though. What are some other choices to drink? Water being the first - I am going to change this and need some advice on how to break these habits

I have no idea how to start, maybe running MWF and weights Tue Th Sat?
I'm not sure what caloric intake I need and would really appreciate if you guys could help me out! Thanks guys!