Q: Iam skinny and i wanna and some kgs.What i should do?

A: In three words: EAT AND LIFT! You are actually in a perfect position to start putting on muscle because you have room to grow and can afford to gain some fat that will inevitably come along with the new muscle. Read my Weighttraining and Nutrition articles and understand them thoroughly. The Weighttraining article presents several weight routines -- pick any one you like that uses gym equipment (I recommend starting with the split ones). The Nutrition article has a calorie calculator which you can use to see how much you should be eating to gain muscle and then a couple of muscle-building diets that you can use as starting point (adjust calories by reducing or increasing portion sizes to match what the calorie calculator suggested). Aim to gain 1-2 pounds every month or even more if you are not worried about extra fat. If you're not gaining fast enough, eat more! Also check out http://www.mikesfitness.com/content/how-long-to-gain-pound-muscle to see how much muscle you can expect to gain. Good luck!