I don't think I've covered this yet, and I will in an upcoming class, but you can create different headers and footers for your FIRST PAGE and/or EVEN v. ODD pages by going into File > Page Setup and on the LAYOUT tab, checking those boxes under the Headers and Footers section.

If you want totally different headers and footers (like for a new chapter in a book) you can do it with a SECTION BREAK - again, I'll cover this in a future lesson.