Try this if you don't see any main menu items at top of screen you maybe Full screen mode
- First try hitting the esc Key see if items return.
- Next hold down Option key while clicking the green stoplight button see if items return.
To adjust window to size in Yosemite 10.10.3 do as follow with Office 2011 only:
- hold down Option key:
- Click on green stoplight button
Notice it has a + sign this indicates you can resize window
3. Now go down to bottom right corner and move up, down, left, right, or diagonally to adjust window to desired size.
4. If you need to and can get to top of window, click and drag down, open left or right to center on screen.
If you do not hold option key down this is what stoplight buttons look like:

Notice in the green light. It has changed from a + to two arrows pointing away from each other at 45º angle.
This is Full screen indicator click once (without option key down) and goes to full screen display.
Click again (without option key held down) and it returns to normal display.
If this does not help , return and we will give you direction on how to correct window that is to large for display.
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