horrible at relationships

i'm really young (a junior in high school), but still i know that i'm inexperienced when it comes to relationships which causes me to be very bad at them. i don't like drama and i just focus on work and school. there's a boy who likes me and i'd like to at least get to know him better but any past relationships have been pretty rough for me. i have no idea how to express myself or my feelings

how can i make myself better w relationships?