Get your taxes done using TurboTax

Worksheets are intermediary pages that make calculations before the results are transferred to an official form in your return.  Many of them say "Worksheet" in the title.    Your PDF may or may not have any worksheets.  It depends on where you downloaded it and which kind of PDF you chose.    When you download from the Print Center inside the return, you have a choice of downloading just the return or the return plus all the worksheets.   If you downloaded at the Tax Home, or printed in the FILE section, then your PDF may not have any worksheets.   In any case, if your PDF has worksheets, you do not mail the worksheets.  Many of them even say "for your records."

In the forms you listed above, you are correct that you do NOT mail the Filing Instructions or the electronic postmark.   You would send the other forms you listed.  They should have an attachment number in the upper right corner showing the sequence you would attach them behind the Form 1040.   (see image below)

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And as I mentioned in the IRS instructions I pasted earlier, you would attach a copy of any W-2, as well any W-2G (if applicable) or 1099-R (if applicable) if tax was withheld.