I'm not gonna weigh in too much as i've only read the OP first post & don't wanna step on any other posters toes, but as far as the weed thing goes, i'm not against it, i personally choose not to smoke, i just think its not sexy and boring, but all my friends do it, but weed itself isn't a bad drug in my eyes, this might be my Jamaican (yes i'm 100% Jamaican) side being ignorant but weed itself is actually pretty healthy more or less, its a herb, and test have shown that weed smokers on average live up to almost 2 years longer than non-smokers & hell if you choose to smoke occasionally, better it be weed than cigarretes.
i'm not saying you should smoke anything, or get high to have fun, i had a very similar childhood with being in a room playing video games as my only form of interaction, so i understand your side of saying: "i'm enjoying life in a new way that just so happens to include a BIT of marijuana here & there" as opposed to people hearing "i hated my old life, i smoke weed as a result and screw my grades now" - thats not the case here, so i get that and i'm just saying if your gonna hang out and have fun i'd prefer you smoke weed over cigarettes or black & milds, if not just skip it altogether.
Just as long as you keep a mindset of self-worth and don't try OTHER things cuz you THINK you can handle them sometime down the road, then you SHOULD be fine, but smoking weekly is a bit much in my mind, no matter what the substance is your gonna get an addiction, humans are fragile --> hell if i had Nutella chocolate weekly for a year i'd prolly end up eating someone's face off in miami if they banned the stuff, but smoking monthly or even better: "once in a blue moon" is different. I've tried weed and black & milds each on seperate occasions of years apart, and it'd be no more than a single digit number of hits,maybe i'm not attracted to it as i really don't see the allure but its def possible to enjoy something in moderation.
and keep your grades up, i just graduated, schools always gonna suck but its nice to apply yourselves once in awhile, never know when a teacher takes interest in a student and tries to get them a job that pays better than a fast food joint.