Danj, I'm gonna toss out a more serious post for you right now. This is what I did to start losing the 80lbs on my frame. I posted my success a few pages back, so feel free to look for it.
I saw that you said you were overweight and needed to lose weight, didn't realize that in my first response, and I slung info at you with a bodybuilder mindset, don't do what I said.
What you need to do, before you even think about really revamping your diet, is track what you eat for a day or two, find out how many calories you're getting in. Compare that with how many calories you burn,, you calculate that with many tools or I can do it for you, I just need your stats and an idea of how active you are.
From there you can start making adjustments.start cutting the really bad food, stuff that's fried, sodas, sweets, starchy things. Start trying to eat leaner meats like chicken or turkey however you can, even if you have to do it through sandwiches. Find a veggie you really like and eat a lot more of that. I was a college student living on campus when I started. My only source of food was at the cafeteria. I did whatever I could to clean things up, while still enjoying my meals. I ate more chicken and veggies, didn't go for the fried stuff. You say you buy your lunches, just start moving to things that are a bit cleaner. When you prepare meals at home, keep it simple. Practice cooking, read recipes, but most importantly find foods to eat at home that are convenient and good for you. Veggies, fruits, almonds, tuna, stuff like that.
Bottom line is you wanna eat less than what you burn on a daily basis, key to losing weight in any situation.
That means you're gonna have to workout. Including weightlifting at a gym. Not only because you burn calories there, but mostly because you're going to increase your metabolism with added muscle mass. You said you have no one to help you get started, that's not true. I thought the same thing when I started, but I looked anyway. I messagesd every guy I could find in my local area on bodybuilding.com asking if they could get me started, teach me some lifts and help me get going. I actually got several responses, one guy offered to start training me and I took him up on that. Had it not been for him, I would've never set foot in a gym. You could do something similar, use your resources and find someone. It makes the initial process so much easier.
Start doing cardio, I'm not sure how overweight you are, but any cardio is more than you're probably doing now. Even if it's walking briskly for 45 mins every other day, it's something.
If you really wanna make this happen you need to go in with the mindset that you're committed and you believe it's going to happen. You believe you're gonna reach your goals. Until then it's going to be hard to get anywhere, you'll be too focused on the problems of losing fat, make excuses, and ultimately quit, THIS IS THE BIGGEST PART OF LOSING FAT, PERIOD. The first month is the HARDEST month, you have to force yourself through it, no matter how shitty things go. You miss a day at the gym? Keep going. You cheat on your diet? Keep going. This is the hurdle no one here can he you jump, it's all on you. However once you cross it.... That's when things change. That's when you start making progress, and you're going to go from hating life, to loving it.