Acting career start off

Hey everyone! So im trying to get into acting, im in an acting class cause im only 15 and im going to acting camp later in the summer. After i go to my dads house im going to an auditioning camp where at the end they will take pixs for agencies and make us our own auditioning tape to send off right away to anything. so i hope after all this happens, and i get my braces off, i can get into acting!!! Im gonna start small,maybe like a background extra, and go up the ladder!! plus im excersising to get into better shape. any tips on acting? (nice perferably)