Skinny guys can find it the hardest the gain weight. They often quote that they can eat a ton of food without gaining a pound. Being one, I can attest to that. But there are ways to go from skinny to sculpted if you diet properly and keep a good track of it. Add all of this information to your current diet and your workout routine, and you will to start to see some noticeable gains fast.
As a skinny guy, tracking the amount of calories that you eat per day is important. You might think that you eat enough, but you might after doing the calculations that you in fact, eat less than the average person per day. The rule is that you need your body weight (lbs) multiplied by 20kcal in order to increase your weight. So if you weigh 140 lbs, you'll need 2800 calories per day to gain weight. That's eight hundred more calories than the average diet. If you have a physical job or are incredibly active, then you'll need even more.
Instead of gorging 3 times a day and putting your body under all that stress of working off that food, eat every 3 hours. When you wake up in the morning, eat breakfast within one hour of waking up. Be sure to get a lot of protein into your body after you work out.
The foods that you choose will help determine the size you get. Always think about eating calorie dense foods. Pasta is a great food rich in calories. If gaining a little bit of fat along with muscle doesn't worry you, drink 1 gallon of milk per day. Milk is a great source of protein and calories. Nuts and peanut butter are great to have for snacks or add to different meals like salads. They are another excellent source of protein that will help you get your calorie intake.
Planning is the all important factor in all of this. If you aren't able to cook for yourself and prepare the amount of food that you need to eat to gain weight, you've got to find alternatives. Always use a grocery list so you are never left without food in the house. Cook in advance and in bulk if you can so that when things come up that make you change your plans on a dime, you'll still have a full meal prepared and ready to eat. Utilize food containers and take leftovers with you wherever you go so you are never without a proper meal no matter where you are.
Remember that you want to go from skinny to sculpted, not skinny to a fat guy. So pay attention to your diet and pay attention to your workout routine. It will take a lot of work and diligence, but you will see the gains in a short amount of time. As an added bonus, skinny guys often have smaller waists so their shoulders and upper body look much bigger in relation to those who weigh more than them.