dude, your brother might kick your ass, be carefull. If someone hacked onto my Sherdog account I would want blood.
Anyway, check out what are called the "stickies" and the "search function". With a little time you will get to know those things well.
Then whatever questions are not answered there I would start a thread.
But what the hell, I'm bored.
If you want to lose weight, then fuck fad diets (I assume that is what you are on). Eat healthy and start working out.
In fact, pretty much everyone here trains in some martial art, that might be a good idea for you. At your size you are pretty obese (no offense), so you will see big changes if you get active.
There are no pills that will make to much of a difference. There are diet pills, but at your size what you need is a lifestyle change. You need to revamp your diet. Quit drinking pop and start drinking green tea. With small steps you will see big differences. Good luck. And don't use your brother's account around here, a post like that from a blue belt really messes with our ethos.
Get your own account.