Any tips? For gaining weight

Kim • J❤️🌈👶🏻🤞🏼

I’m 19 5’2 and I weigh 100 lbs. I get so self conscious with my skinny body. I got a small bum and small boobs I still got something but not a lot. Do you guys know any tips that can help me gain weight or muscle. No hate please. I want to start going to the gym but I don’t know what workouts to do. I don’t want to get more skinny. And I would love to see any of your ladies transformations if you went through something like this