How to take a screenshot with dual monitors

Screenshot of both monitors
Step 1: Press the "Ctrl" and "Print Scrn" buttons simultaneously.
Step 2: Paste in desired email or document.

Screenshot of one monitor
Step 1: Move cursor on the screen you want to screenshot
Step 2: Press the "Ctrl", "Alt" and "Print Scrn" buttons simultaneously.
Step 3: Paste in desired email or document.

Screenshot of individual window
Step 1: Click on desired window
Step 2: Press the "Alt" and "Print Scrn" buttons simultaneously.
Step 3: Paste in desired email or document. 

Crop a screenshot
Step 1: Open Microsoft Word.
Step 2: Paste screenshot
Step 3: Click on screenshot
Step 4: Click the "Format" tab under "Picture Tools"
Step 5: Click Crop
Step 6: Drag handles to desired size