Chromebooks are designed to enable you to be more productive. Here are a few keyboard shortcuts for Chromebook to let you work faster and with less effort!
TAB AND WINDOW NAVIGATION
Ctrl+N – Open a new window
Ctrl+Shift+N – Open a new window in incognito mode
Ctrl+T – Open a new tab
Ctrl+O– Open a file in the browser
Ctrl+Shift+Q – Sign out of your Google Account on Chrome OS
Ctrl+W – Close the current tab
Ctrl+Shift+W – Close the current window
Ctrl+Shift+T – Reopen the last tab you’ve closed. Google Chrome remembers the last 10 tabs you’ve closed.
Ctrl+1 through Ctrl+8 – Go to the tab at the specified position in the window
Ctrl+9 – Go to the last tab in the window
Alt+1 through Alt+9 – Go to the window at the specified position
Alt+9 – Go to the last window open
Ctrl+Tab – Go to the next tab in the window
Ctrl+Shift+Tab– Go to the previous tab in the window
Alt+Tab – Go to the next window you have open
Alt+Shift+Tab – Go to the previous window you have open
Click and hold the Back or Forward arrow in the browser toolbar – See your browsing history for the tab
Backspace, or press Alt and the left arrow – Go to previous page in your browsing history.
Shift+Backspace, or press Alt and the right arrow – Go to the next page in your browsing history.
Press Ctrl and click a link – Open the link in a new tab in the background
Press Ctrl+Shift and click a link – Open the link in a new tab and switch to the newly opened tab
Press Shift and click a link – Open the link in a new window
Drag a link to a tab – Open the link in the tab
Drag a link to a blank area on the tab strip – Open the link in a new tab
Type a URL in the address bar, then press Alt+Enter – Open the URL in a new tab
Press Esc while dragging a tab – Return the tab to its original position
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PAGE SHORTCUTS
Press Alt and up arrow – Page up
Press Alt and down arrow – Page down
Space bar – Scroll down the web page
Press Ctrl+Alt and up arrow – Home
Press Ctrl+Alt and down arrow – End
Ctrl+P – Print your current page
Ctrl+S – Save your current page
Ctrl+R – Reload your current page
Ctrl+Shift+R – Reload your current page without using cached content
Ctrl and + – Zoom in on the page
Ctrl and – – Zoom out on the page
Ctrl+0 – Reset zoom level
Esc – Stop the loading of your current page
Press Alt and click a link – Open the link in a new tab in the background
Ctrl+D – Save your current webpage as a bookmark
Ctrl+Shift+D – Save all open pages in your current window as bookmarks in a new folder
Drag a link to bookmarks bar – Save the link as a bookmark
Ctrl+F – Open the find bar to search your current page
Ctrl+G or Enter – Go to the next match for your input in the find bar
Ctrl+Shift+G or Shift+Enter – Go to the previous match for your input in the find bar
Ctrl+K or Ctrl+E – Perform a search. Type a search term after the question mark in the address bar and press Enter.
Ctrl+Enter – Add www. and .com to your input in the address bar and open the resulting URL
Ctrl+ 
Take a screenshot of your current page
Ctrl+U – View page source
Ctrl+Shift+I – Toggle the display of the Developer Tools panel
Ctrl+Shift+J – Toggle the display of the DOM Inspector
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BROWSER SETTINGS AND NAVIGATION
Ctrl+Shift+B -Toggle the display of the bookmarks bar. Bookmarks appear on the New Tab page if the bar is hidden.
Ctrl+M – Open the file manager
Ctrl+H – Open the History page
Ctrl+J – Open the Downloads page
Shift+Esc – Open the Task Manager
Ctrl+Alt+/ – Open the list of available keyboard shortcuts
Ctrl+? – Go to the Help Center
Ctrl+ – Configure monitor display
Shift+Alt+S – Place focus on the status area in the top-right corner of the screen. Use the actions listed for Shift+Alt+T to move the focus.
Shift+Alt+T –
Place focus on the browser toolbar
– Press Tab or the right arrow to focus on the next item in the toolbar
– Press Shift+Tab or the left arrow to focus on the previous item in the toolbar
– Press Ctrl+Alt and the up arrow to focus on the first item in the toolbar
– Press Ctrl+Alt and the down arrow to focus on the last item in the toolbar
– Press Space or Enter to activate buttons, including page actions and browser
actions
– Press Shift + 
to open the context menu for the button (if available).
– Press Esc to return focus to the page
Ctrl + or Ctrl + 
Switches focus to the next keyboard-accessible pane. Panes include:
– Status bar containing the time, network icon, and battery icon in the upper-right corner of the screen
– Address bar
– Bookmarks bar (if visible)
– The main web content (including any infobars)
– Downloads bar (if visible)
Alt+Shift+B -Place focus on the bookmarks bar. Use the actions listed for
Shift+Alt+T – to move the focus.
Alt+E or Alt+F – Open the wrench menu on the browser toolbar
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TEXT EDITING SHORTCUTS
Ctrl+A Select everything on the page
Ctrl+L or Alt+D Select the content in the address bar
Press Ctrl+Shift and right arrow Select next word or letter
Press Ctrl+Shift and left arrow Select previous word or letter
Press Ctrl and right arrow – Move to the start of the next word
Press Ctrl and left arrow – Move to the start of the previous word
Press Alt and up arrow – Page up
Press Alt and down arrow – Page down
Press Ctrl+Alt and up arrow – Home
Press Ctrl+Alt and down arrow – End
Ctrl+C – Copy selected content to the clipboard
Ctrl+V – Paste content from the clipboard
Ctrl+Shift+V – Paste content from the clipboard as plain text
Ctrl+X – Cut
Ctrl+Backspace – Delete the previous word
Alt+Backspace – Delete the next letter (forward delete)
Ctrl+Z – Undo your last action
(Courtesy of Chrome-Guy on Chromebookforum.com)