I dont know how to start...

Figure out your calorie and macro goals. Walk more. Go from there.

Since you have problems with your neck and back, you should honestly start with a visit to a physical therapist or sports doctor so that you can find out what you should be careful about, what can actually help improve those issues, and what to absolutely avoid. I was shocked to find that lifting heavy was the #1 recommendation for my chronic neck issues and that I COULD run with a bad knee (I just had to work up to it more slowly and limit my distance somewhat).

Walking is one of the best exercises for people who are struggling with basic physical fitness. It is low impact, can be done anywhere, and has a variety of options from powerwalking for cardio to long distance walking for indurance to helping you relieve stress and tension.

Start tracking everything you eat. Buy a food scale and weigh everything so you know you're entering things correctly. Start moving more. Just starting going for walks. Walk as far/as long as you can and gradually work on increasing the duration and distance.

Don't expect too much at the beginning, just do what you can. Anything more than you do now is a step in the right direction. Once you have a good idea on how much you're eating, start cutting back.

Eat out less, cook at home more. Eat less processed food, eat more 'real' food. Stop buying food from the aisles, and shop more around the parimiter of the grocery store. That's where the fresh stuff is. Allow yourself indulgences once a day or once a week, depedning on the strength of your resolve.

Don't feel like you have to cut anything out, just cut it back. Don't carry money with you unless you have something specific to buy, that way you're not tempted to stop for fast food.

That should get you started.

I just realized that I answered your question with specific workout advice, but you were asking for general weight loss. The truth is that the majority of weight loss comes from diet, not exercise. So, while working out will definitely help you feel better and look better, the main thing for actually losing pounds is counting calories (or points or whatever your preferred method is).

1. Definitely buy a food scale so you can have a better idea of how much you are eating.
2. Start walking even if you can only go up the block initially.
3. Please don't start at 1200 calories - which is what MFP might start you with. You will backslide if you make such a drastic change in calories at your first attempt.
4. Try these websites to get better ideas of where to start calorie-wise.
>>To get military fat percentage: http://www.fat2fitradio.com/tools/mbf/
>>To get BMR: http://www.fat2fitradio.com/tools/bmr/
>>An alternate site: http://iifym.com/iifym-calculator/
Between all these, you should have a good idea where to start calorie-wise.
5. Please do not attempt to cut out EVERYTHING at once. Eg. If you drank 5 glasses of soda per day, maybe try going to 3 glasses per day in the first week.
6. Take the exercise burn calories with a grain of salt, assuming over inflation. Don't eat back all of it.
7. Above all, do not beat up yourself if you don't do as well as you thought you should. If you backslide at one meal, don't give yourself permission to blow the entire day...get back on board at the next meal.

Good luck. YOU CAN DO IT!!!!!. No matter how giant that elephant, it can be eaten just one bite at a time!!!

I don't know what Caseys is so I looked it up online. Is it that pizza restaurant? Having all those good aromas around would be tempting, but it looks like they have their nutrition information on their website. That will help you make the best choices there that you can.

As for exercise, walking is great. My sister has back and neck issues and is quite heavy. She can't walk well, but she finds it much more comfortable to ride her bike.