im new and need helo

jtrain252

So back In august I started myfitnesspal. I was 323lb 5ft8 and 25 years old. I completely changed the way I ate and started doing wiisstep everyday. By the end of September I hit 299lbs. Now myfitness tells Levi should brownie eating 1800 vaporized in order time lose weight. My average at the end of the week was 1600-1700. This month though I seem to have gone up a little. I need time know how to utilize this. Should I be eating 1800, eating 1800 then burning two hundred calories. Do I eat till my net is 0. It's confusing. My goal is Getting to 225lbs. I could use help figuring a plan of attack please. I usually do Wii step for 30 minutes which is about 200 calories sometimes I do 6-8 in step for 30 minutes. But my calories are never the same someday I eat 2000 then burn 400 someday I eat 1500 and don't exercise.
Anyway anyone who has a chance to check my diary and logs send give me a suggestion it would be appreciated