If you dont want a page number to appear on the first page select Different First Page. On the Design tab in the Options group choose Different First Page. Go to Insert Page Numbering.
On the Design tab in the Options group choose Different First Page.
Select Close Header and Footer or double-click anywhere outside the header or footer area to exit. Select Current Position if you have a header or footer. Start page numbering on Page 3 - double-sided printing. Click Insert at the top toolbar.