Word has a large number of shortcut keys that make working with Word easier. Below is an overview of a number of useful shortcuts:
General
New file: CTRL+N
Open file: CTRL+O
Save: CTRL+S
Print: CTRL+P
Print preview: CTRL+F2
Select and navigate
Select all: CTRL+A
Begin document: CTRL+HOME
End document: CTRL+END
Begin sentence: HOME
End sentence: END
Edit
Copy: CTRL+C
Cut: CTRL+X
Paste: CTRL+V
Undo: CTRL+Z
Repeat: CTRL+Y
Search: CTRL+F
Format
Bold: CTRL+B
Italics: CTRL+I
Underline: CTRL+U
Copy formatting: CTRL+SHIFT+C
Paste formatting: CTRL+SHIFT+V
Capital letters: CTRL+SHIFT+A
Subscript: CTRL+=
Superscript: CTRL+SHIFT++
Questions / suggestions
It is not the intention to provide a complete overview of all keyboard shortcuts in Word here, but if there are any further questions on this topic or suggestions for improvement, please comment below.