Help!! How can I gain a couple pounds of muscle in around two months?

Anonymous
Ok, I'm a 13 year old girl, and I'm going to a new school. I've always had body confidence issues and I have social anxiety. I have decided that I want to start body building, but just enough to make me look strong and have thick legs. I feel as if this will give me the confidence that I need. Ok enough of me talking. My question is: How do I do this? I know it's unrealistic to get what I want in two months, but I want to at least gain a little mass. Also, if this helps, I'm a mix of an Ectomorph and mesomorph body type.( more mesomorph) I don't know much about any of this " Body Building" stuff, so that's why I'm asking for some help. Anyway, Thank you!
Updates
+1 y
If this helps I want to achieve a body like Alyssa loughran some day
Help!! How can I gain a couple pounds of muscle in around two months?
8 Opinion