This is the list of the 30 most used keyboard combinations/shortcuts and hotkeys for Microsoft Word. I hope you will find them useful 
CTRL+B - Make letters bold.
CTRL+I – Make letters italic.
CTRL+U – Make letters underline.
CTRL+DEL – Delete the word to the right of the cursor.
CTRL+BACKSPACE - Delete the word to the left of the cursor.
CTRL+SHIFT+SPACEBAR - Create a non breaking space.
CTRL+C - Copy the selected text or object.
CTRL+X – Cut the selected text or object.
CTRL+V - Paste text or an object.
CTRL+ALT+V – Paste special
CTRL+SHIFT+< – Decrease font size one value.
CTRL+SHIFT+> – Increase font size one value.
CTRL+[ - Decrease font size 1 point.
CTRL+] – Increase font size 1 point.
CTRL+HYPHEN – Create a nonbreaking hyphen.
CTRL+SPACEBAR – Remove paragraph or character formatting.
CTRL+SHIFT+V - Paste formatting only
CTRL+Z – Undo the last action.
CTRL+Y - Redo the last action.
CTRL+SHIFT+G - Open the Word Count dialog box.
CTRL+L – Align selection or paragraph to the left of the screen
CTRL+E - Align selection or paragraph to the centre of the screen
CTRL+M – Indent paragraph or selection
CTRL +1 – Single-space all the lines in selection
CTRL +2 - Double-space all the lines in selection
CTRL +5 – 1.5 - space all the lines in selection
F7 - Run a spelling and grammar check
SHIFT+F7 – Use the Thesaurus
CTRL+SPACE – Toggle AutoCorrect
CTRL+SHIFT+8 – Toggle hidden characters that mark spaces, carriage returns, etc.
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