Quote: "So got it to mirror/dup(Screen Attached)When selecting the vertex for one side to the other it will select more then i want not just the 3"
Try checking the "Ignore backfaces" button in the Select tool options. That will make it so you can't accidentally select vertices on the other side of your model.
When you're working with large models, it's also convenient to simply hide parts of the model you aren't working with at the moment -- Ctrl+H will hide any vertices or faces that are selected, then you can use Ctrl+Shift+H to unhide everything once you're ready to start working on a different part of the model.