what type of food weight loss products work that i can just pick up at the grocery store

try the south beach diet that you buy at Safeway or Fry's for great diet recipies look on-line for weight loss diet foods, but any food is a diet food just as long as it is not fried.

I suggest herbs, you can find them in the supermarket, there are some names: fucus, red tea (puh er), guaran??, green tea.
If you get used to consum any of this ones you'll notice a change, specially for the red tea

Non of them! They are marketed for one reason, to part you from your money.

Just about any food will work .
Pick up a scale to weigh your food and eat correct portions.
Weight loss is all about Portion Control
Eat in moderation
Increase your activities.
1200 - 1500 cal daily to lose weight and maintain it

slimfast shakes are great meal replacements.

Cheese and milk are rich in calcium. This will help you a lot. Also try taking more Vegetables, Fruits and Protein rich food.
Visit http://looseyourweight.info/diet.html for more details