Where do I start

Ok so Im new at this and really dont know where to start. Lets see. Well the main reason Im starting this is because Im trying to lose weight and I heard it can be a good idea to start one of these things to keep you motivated and on track. I am a single mother of 3 and I am in nursing school so even though losing weight is important to me it sometimes takes a backseat to the rest of life. Hopefully by writing about it I can stay on it. I just turned 30 last month and I am at the highest weight I've ever been. My biggest problem is food. I am a very picky eater. All I hear from people is "you know if you eat healthier you'd lose weight". Well actually yes I don know that but being that I dont like most foods I have a difficult time doing that. I've tried all the diets they recommend like weight watchers but right now who can afford that. Losing weight is expensive. My goal is to lose 40lbs but to make it simpler I'm going to break it down in 10lb incraments. Hopefully by doing that this wont seem so unatainable. I just want to be lose weight and be heathier. I want to feel good about myself. I dont want to look around and feel like the biggest person in the room anymore. I hate the way I look. I hate looking in the mirror I feel so discusted. I know this is going to be hard but Im going to put my mind and my heart to it. Lets see what happens :)