You're going to have many questions. Each one is going to cause another.
I would heartily suggest visiting the training forum, or entering the training arena for a quick run through with the staff in there.
As for your immediate questions, / button opens the chat buffer and there isn't a best plane to start with. Just start grabbing them and have fun.
But trust me on the training arena, just get it over with, you will be much happier in a far shorter time than trying to wing it.