Well, I think it's clear that if anyone were to be confused on any pieces of the 2nd amendment, I would be he.

I need something explained to me as I've never studied constitutional law but how does an amendment to the constitution, a rule applying to the federal gov't, prevent states or cities from regulating guns?

I was always under the assumption that guns are regulated. In some states background checks are required at gun shows. In others there are waiting periods for purchasing weapons from stores. In others still you need to register weapons with local law enforcement. Locking devices must be sold with guns. Minors can't own guns... etc. How is the second amendment preventing your state from becoming more like Canada?