Could you share some teenage friend advice and relationship building ideas?

As a New Year Resolution, I vowed to develop and rekindle closer friendships. I live in a small mountain town, attend school in another city, and stay with my boyfriend in Atlanta a good bit. It seems that when I changed schools, I lost contact with a fair amount of my hometown friends. I don’t drive, so making plans with anyone proves difficult. My boyfriend and I have a lot of mutual friends, but I’d like to meet some new people at school. Moreover, I’d like to rekindle some relationships here in Dahlonega.
Advice? Recollections? Eh?