The long and short of it is this - I'm -seriously- overweight, and having a terrible time getting a handle on it. I'm currently dealing with a back injury, and the weigh is only making it worse. Hopefully you awesome folks can start me in the right direction.
A little about me: 29 years old, 5'10", 375 lbs. Historically not athletic in the slightest. I ruptured a disc in my lower back about two years ago. Rehabbed fairly quickly, went on weight watchers and lost 100 lbs. Convinced myself that I knew enough to keep it up on my own, quit WW and gained a good bit of it back. Re-injured my lower back about 8 months ago, and discovered two bulging discs in my middle and upper back. Rehab has been much slower this time around, to the point where I'm going to see my spine Dr. this week to discuss the possibility of injections.
Previously, my Dr. had not recommended injections or surgery, but instead ordered me to lose weight, and see a chiropractor. The chiropractic treatments have helped, but the weight is still an issue, and both docs are stressing the weight loss. Unfortunately, due to my injury I'm pretty limited in terms of physical activity. I take a short walk two or three times a day, but even that only adds up to a mile or less. It's sort of a catch-22 - I need to lose weight to help my back, but I have trouble being active because of my back.
I'm not really sure what kind of advice to ask about - my eating habits are all over the place due to poor meal planning skills and issues with food (emotional/mindless eating) and when I go online to find out info such as how many calories and how much fat I should be eating every day, each site I visit seems to have wildly varying numbers.
I suppose the place to start is finding out what exactly my daily requirements are, given my age/height/etc. Can anyone recommend a GOOD, accurate site where I can find that out? Or, if anyone here is comfortable enough with nutritional requirements to just tell me, that'd be fine too!

Thanks so much for taking the time to read all this - hopefully I didn't ramble too badly. I'm just so sick of being fat and being in pain it's driving me nuts.