If you run into formatting issues other than page numbering and table of contents, you may find the solution here. You will find instructions with screen-shots for creating Landscape Pages, fixing Margins, where to find Word Count & Spell Check and how to use the Hidden Mark-ups feature to find out why you may be having formatting difficulties.

Landscape Pages

Step 1: Move the cursor to the end of the Portrait Page Insert -> Break...

Step 2: Select "Next Page" under 'Section Break Types' -> OK

Step 3: Select the page you want to be turned into a landscape page, File -> Page Setup...

Step 4: Select the landscape orientation -> OK

Step 5: Move the cursor to the end of the Landscape Page, Insert -> Break...

Step 6: Select "Next Page" under 'Section Break Types' -> OK

Step 7: Select the page after the Landscape Page File -> Page Setup...

Step 8: Select the Portrait orientation -> OK

Step 9: A Landscape Page between two Portrait Pages

Margins

Step 1: Go to File -> Page Setup...

Step 2: Specify the margins -> OK

Word Count

Step 1: Go to Tools -> Word Count...

Spell Check

Step 1: Go to Tools -> Spelling and Grammar...

Show Hidden Markups

Step 1: Hidden markups will be shown, good for fixing mis-added breaks, tabs