Hi, Asperger's sufferer here. I was on the verge of killing myself just before the 3rd year of uni. Horrifically lonely, terrified of the future, failing academically. I'd tried weed before, but literally just a toke here and there.
Once I'd decided to kill myself, I thought "f*ck it, no future to care about, why not have a week just getting high like I've seen on TV?" Bought my first bag, rolled my first enormously shitty joint. Smoked every day for a week.
I just didn't stop, after that. My grades radically improved. I was able to seek support from my university. People weren't terrifying any more. A few months later I had my first girlfriend and lost my virginity. I slept for more than four hours a night. I've now had a succession of meaningful relationships, worked my way upwards in my job. I've cut back a little on the weed, but that's because I'm so much happier.
I've had friends who started weed way too early, they sound like your mates. I didn't try any until I was 18 and I was 20 before I went to a daily dose. It didn't just help me survive, it allowed me to live.
My advice would be: keep doses low, just enough for a comfortable head tingle, not enough for a wobble. Make sure it's blended with other activities, such as a part of a nice stroll. Keep moving, don't let it become a sofa anchor. Dried fruit and/or nuts for the munchies. Use a herbal vape to minimise lung stress. Sativa over indica, if given the option. Don't do it before work or in a lunch break, but it's a lovely treat for a commute home.