Being new in a job automatically puts you in a somewhat 'dependent' position, which can raise old experiences and fears. I realize your post isn't really about the new job duties but more about fear of not being accepted by others. However, try keeping notebook and write things down as you learn them and refer back to it so that you don't have to ask your co-workers so often. This has really helped me in the past and it lessens that helpless feeling when you are new.

Beyond that, take a few minutes each day just to chat or laugh with your co-workers ... something not job-related like ask about their kids, family, etc. It will take the pressure off.

One day at a time ... that's all you have to do is one day at a time.