Hi and welcome!
There's loads of information on these boards so take your time and enjoy!
Calories are calories. If you have 100 calories of one thing and 100 of another, it's same as asking the question, which is heavier, 100 pounds of feathers or 100 pounds of iron. They weigh the same. Calories are the unit measurement of energy required to raise water by a single degree. I forget the amount of water, but that's what a calorie measures.
Ive been using Skinny Fiber to help me lose weight. It reduces your absorption of calories even though you carry on eating the same foods, and Ive found it makes me more energetic throughout the day too. I take Skinny Fiber half hour before I eat, twice a day, and I've lost 19 pounds since December so I'm happy so far! If you want some info then by all means drop me a PM!
Welcome once again,