Eat frequently! – Arrange to have 3 large meals and 2-3 snacks every day.
Eat bigger than normal portions for your meals
Eat food with higher calories
Add healthy unsaturated fats such as olive and canola oil, nuts, seeds, peanut butter, avocados.
Eat diet food with high calories & proteins like eggs, fish, meat, veggies, milk, protein supplements, fruits- bananas etc
Beverages can help you gain a weight too. If it’s possible, drink shakes, milk, juice, etc. instead of water,
Increase your protein intake. Your body needs a lot of protein to build new muscle. But since most of the calories for weight gain come from carbohydrates and fats, do not replace them with protein.
Do resistance training -- Weight training helps convert the extra calories into muscle. One of the best weight training exercises for building muscle mass are free weight exercises like squats, dead lifts, bench presses, barbell rows, pull ups and bar dips.
Consistency - It would take some time, usually a few months, for you to see some weight gain. Many people get frustrated and quit when they fail to see dramatic improvement. You need to focus on your weight gain plan.
Many people are skinny because of their genetics. But effective weight gain program can help you exceed your genetically predetermined weight.
Supplement is also important at gaining weight for you.
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