I want to get weight but how at can i do?

Do you mean: "gain" weight. If this is the case, it means that you will need to balance your caloric intake with how many calories you are "burning". You'll likely need to increase your caloric intake, but I would do this in a smart fashion, which means consuming healthy calorically dense foods like that food in avocados, nuts, beans and seeds.

Unclear question: If you want to lose weight, he best method for weight loss is by making slow consistent changes in your lifestyle. People who make rapid abrupt changing in diet and/or exercise tend to revert to their old habits and usually regain any weight they have lost. For some healthy tips for losing weight see: http://helpdoctorwtlosstips.blogspot.com/ If you are asking something else, try again...