would like to know more about getting an annulment.

An annulment is very rarely granted and may only be sought on very specific grounds. These include fraud, incapacity, force, bigamy, etc... These grounds for nullity of the marriage must have existed at the time the marriage was entered - meaning it won't work to argue that over a period of 7 months you realized you didn't want to be married to this person. But you are entitled to a divorce, and after such a short period of time you are unlikely to have substantial financial entanglements that will make the process difficult. I would suggest consulting with an attorney if you can afford to do so.