Howdy again seddit!

It's been a long, but ok summer. I got a summer job as a life guard, got a tan, worked out, worked on my social skills. I can now carry on a conversation... with an adult but not with people my age (women to be exact). I gained the courage to make eye contact, smile, say hello, hows it going and leave. Very dissapointing but an approvment none the less.

Anyway, school is starting back up this Monday and I feel my confidence is much higher then what it used to be. Just last year it was "I am an ugly dude, fuck it." to "I am a sexy mother fucker!". (I was also told I am handsome, attractive, sexy, gorgeous this summer but by older women, am I doing something wrong?). Back on track, I want to walk into that building and make new friends, become one of the "popular" kids. I am not a loser, I have friends and so on but it would be great to get more friends, and get more women friends (I have none at this point, sad I know). I need to become more casual, witty, relaxed too.

Any tips?

Sorry if this is a question that has been asked a lot recently too, I hate being that guy that repeats a question to much.