Any college tips?!

So, I just started college. I was so overwhelmed with everything. Except for studying, because I love what I study now. But I have to deal with homesick, and the most important thing is that I tend to really get intimidated by my new friends who are way more confidence than me. Is there any advice in being confidence?? And one more thing, what am I suppose to do to survive in my new college knowing that my new friends tend to hang out with their groups only. And then there is this group which members are very bossy. Thank you so much! I'd really appreciate your response!