@Jeannie - ummm - when you say you "skipped" the first step, you didn't really mean that did you? The steps listed for you weren't really "optional" for the sake of your future sanity
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As I explained in a previous post, if you don't change your tweaks, then calibre will not do what you want at various places (such as when you change the author name, calibre will automatically put the author sort to that value rather than you having to copy/paste it). Or worse - not notice it is wrong and then have books appear out of order in strange places. Please do implement the Tweaks step too so it is set to a value of "copy" and then you really are done with it.
Also you mentioned copy/paste - I presume you are talking about the Edit Metadata dialog. There is a button to the right that sits between Author and Author sort that you can click on to just copy the value from one to the other.