Step 2: Eat Like a Horse.
While you won't be measuring your food intake in pounds, you will need to eat many, many more calories than you are used to eating.
Here's the point: Eat about 4000 calories a day.
The Calorie Counter is a good website to look up how many calories are in various foods.
It's only healthy to lose or gain about 2.5 pounds a week, so if you find yourself gaining more than that, cut back your daily food intake rate by 500 calories and wait two weeks.
Once you reach your target weight, cut back 500 calories every two weeks until your weight holds steady.
For me, all I have to do is eat my regular meals and an additional 1000 calorie shake every night. If I do this, I gain about 2 lbs. per week.
When you weigh yourself, do it at the same time every week, on the same day. Say, 8pm every Sunday night. Make a ritual out of it, and write down the weight on a calendar or record of some kind.