I will tell you what i know, but maybe some others members may serve you better.
First of all, forget about the plastic bag. If you lose some weight that way, its just water.
To lose weight you need to create a caloric deficit, To do this, you must first calculate your BMR (base metabolic rate, the amount of calories you burn per day while doing absolutely nothing). You can use a tool from this forum, or do it manually, with the next formula;
Men: BMR = 66 + ( 13.7 x weight in kilos ) + ( 5 x height in cm ) – ( 6.8 x age in years ).
So, for instance; 66 + 1109 + 865 - 186 = 1854. If my math is not faulty, you burn 1854 calories per day just for existing.
Then you want to calculate your maintenance calories. (calories needed to maintain weight), using the next formula: (there is also a tool from this, i think)
To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
If you are sedentary (little or no exercise) : Calorie-Calculation = BMR x 1.2
If you are lightly active (light exercise/sports 1-3 days/week) : Calorie-Calculation = BMR x 1.375
If you are moderately active (moderate exercise/sports 3-5 days/week) : Calorie-Calculation = BMR x 1.55
If you are very active (hard exercise/sports 6-7 days a week) : Calorie-Calculation = BMR x 1.725
If you are extra active (very hard exercise/sports & physical job or 2x training) : Calorie-Calculation = BMR x 1.9
Let's say you are moderately active, (remember, this is just an example, multiply by the number you feel adjusts better to your situation) your maintenance calories would be: 1854 x 1.55 = 2873.
This number may be a bit inaccurate for very overweight people (like me), so you may want to reduce it a bit. (I don't think is necessary on your case)
With the final number, you just need to deduct from that number according on how much weight you want to lose. Keep in mind: 1 pound=3500 calories. To lose one pound per week you just eat 500 less calories from your maintenance.
I want to add some things to finish: Your maintenance will go down as you lose weight, so you may need to adjust as necessary. You should NOT go too low on calories nor you should try to lose much weight per week. Try to avoid processed foods, sodas, sugar and fast foods, try to eat as "clean" as possible. Of course you can eat some of these foods once in a while, but:
1) do not do it too frequently.
2) try not to go over your maintenance if trying to lose weight.
I am totally a noobie when it comes to this and i dont even know what i should eat or if calories, fat etc are good for me?
As far as i know, polyunsaturated and mono-unsaturated are "good" fats, but you do not want TOO much. Saturated fats are bad. And STAY AWAY from trans fats, i repeat: STAY AWAY.
Pardon me if I'm wrong, but to my understanding, things are this way.
