hi, welcome to wp
Asperger's syndrome is a difficult syndrome to grasp because of the scope of symptoms and the severity in which they affect each different person on the spectrum. Because of this, therapy, intervention and coping strategies are generally pretty trial-and-error, so have an open eye to what you hear from people. I recommend reading as much as you can about ASD's (well, that is my special interest. My favorite authors include Temple Grandin and Tony Attwood. Tony Attwood's The Complete Guide to Apergers Syndrome is one of the best books that you can find and is written in an accessible manner. Temple Grandin has some excellent books as well about ASD's. One of my favorite's is called Emerging Labeled Autistic which is an old one, but a good one. In particular, Temple Grandin's mother was way ahead of her time in her ability to understand autistic people. She is a good example of what an adult should be for someone with a disability - someone that does not give up and changes the world to work for their child.
There is not much that you can do for anxiety (atleast none that I know of!). Meds are generally designed for adults, so they may not be helpful. You can do things to prevent some of the rudeness/monologuing/lack of understanding emotions. One of the things you can do is increase his ability to self-reflect. You can do this by having him write down his feelings and interpreting social situations with him. When I know that I am on the verge of a meltdown, I start writing because I will calm down and be able to put my emotions in perspective. Another thing you can do is explain how to behave in certain situations and model appropriate behavior. If only I had a wingman to explain everything to me, life would be a whole lot easier! It would really help him if you explained the teasing to him - maybe he does not get it or like it, but it is how other people build relationships, so he needs to understand this. Some Aspie's have really absurd sense of humors' , I can occassionally be a fun person to be around. Asperger's is sometimes regarded as selfishness - which it is not- - but I know that the more experience that I have with things that are different than me - other cultures, other aged people, people that are different - the better I become at taking other's perspectives.
Anyways, there are people that will help you and your son on WP. I know for myself it was somewhat of a relief to learn about AS, but also, I was rather an emotional wreck after learning about my AS - things like grief, denial, anger, frustration, resent and I imagine that these feelings could be rather similar to a parent of a child that has recently been diagnosed, so take care of yourself!