No one can really teach you how to make friends because social interactions vary so much with different people.

I moved around a lot as a child, and I have been reading a lot that the constant uprooting in childhood can really affect one's ability to form close and lasting relationships. The last time I had a really good best friend, I was in middle school. I am social, know how to interact socially, have etiquette, but have issues making friends and getting past that superficial hurdle to having a friendship which is long-lasting. I recently lost a friend a few weeks ago and we were only friends for a few months. I guess people have different ideas of what it means to be friends, which is fine...but I wish I could meet the people whose ideas closely matched mine.