Do i really loose weight fast if i start jogging? i'm a total beginner?

No: Running an 8 minute mile will only burn 100 calories. Compare with drinking one 12 oz dr pepper at 150 calories. It is much easier to put too many calories in than take them out. You have to be cautious in dieting and not slow your metabolism by missing meals and going into starvation mode. Exercise is great for toning and tightening but not very effective at losing weight unless you use weights.

Depends: Increasing activity is a great way to burn calories and increase lean muscle mass by shedding extra fat weight. To lose weight you still need to burn more calories than you take in by eating. Starting a training program with some help by someone who has experience can start you on the right path to help you with proper nutrition, exercise volume, strength training and rest days. Good luck.

Weight loss: Make sure you get a physical first. Then, walk first. Good pair of shoes, no cheapos because injury of foot, ankle, lower leg, etc, stops about half from ever going further. After you can walk say 2 to 3 miles at a brisk pace (3 miles in 45 mins), with your heart rate over about 120 for at least 30 mins during, then begin slow jogging. But walking muscles and running muscles are different!