Here's a simple graphic:
Notice that the running head begins with the words RUNNING HEAD in all caps. This is the only page on which the words RUNNING HEAD in all caps will appear. On all the rest of the pages only the actual running head (in normal upper and lower case) will appear. If you don't know how to insert a header, then read the blog post on how to create a header in APA style essays. Remember, you will format the header differently on all the other page, so you need to make sure that the document is formatted for different header on first page.
After the date, place a page break. Use the page break function from the Insert menu. Don't just put a bunch of returns until the cursor moves down to the next page. That's sloppy and if you end up editing the cover page and there's a line added, then the extra line will move down and affect every page of your essay. If you don't know how to put in a page break, read my blog post 5 Essential MS Word Skills Every Student Should Know.