Computer shortcut keys are designed to make routine computer use easy and increase productivity.
Users execute commands with a few keystrokes instead of going through the hassle of navigating menus and other key components with a mouse.
Shortcut commands are usually generated by using the ‘Alt’  and ‘Ctrl’ keys in combination with other keys.
Here are some important computer keyboard shortcuts in 2020 useful for you;
CTRL+A. . . . . . . . . . . . . . . . . Select All
CTRL+C. . . . . . . . . . . . . . . . . Copy selected text
CTRL+X. . . . . . . . . . . . . . . . . Cut selected text
CTRL+V. . . . . . . . . . . . . . . . . Paste
CTRL+Z. . . . . . . . . . . . . . . . . Undo
CTRL+B. . . . . . . . . . . . . . . . . Bold highlighted selection
CTRL+U. . . . . . . . . . . . . . . . . Underline
CTRL+I . . . . . . . . . . . . . . . . . .Italic
Ctrl + N. . . . . . . . . . . . . . . . . .Open new/blank document
Ctrl + O. . . . . . . . . . . . . . . . . .Open options
Ctrl + P. . . . . . . . . . . . . . . . .  Open the print window
Ctrl + F. . . . . . . . . . . . . . . . . . Open find box
Ctrl + I . . . . . . . . . . . . . . . . . .Italicize highlighted selection
Ctrl + K. . . . . . . . . . . . . . . . . .Insert link
Ctrl + U. . . . . . . . . . . . . . . . . Underline highlighted selection
Ctrl + Y. . . . . . . . . . . . . . . . . .Redo the last action performed
Ctrl + Z . . . . . . . . . . . . . . . . . Undo last action
Ctrl + G . . . . . . . . . . . . . . . . . Find and replace options
Ctrl + H. . . . . . . . . . . . . . . . .  Find and replace options
Ctrl + J . . . . . . . . . . . . . . . . . . Justify paragraph alignment
Ctrl + L . . . . . . . . . . . . . . . . . . Align selected text or line to the left
Ctrl + Q . . . . . . . . . . . . . . . . . .Align selected paragraph to the left
Ctrl + E. . . . . . . . . . . . . . . . . . .  Align selected
F1 . . . . . . . . . . . . . . . . . . . . . . Help
F2 . . . . . . . . . . . . . . . . . . . . . Rename selected object
F3 . . . . . . . . . . . . . . . . . . . . . Find all files
F4 . . . . . . . . . . . . . . . . . . . . . Opens file list drop-down in dialogs
F5 . . . . . . . . . . . . . . . . . . . . . Refresh current window
F6 . . . . . . . . . . . . . . . . . . . . . Shifts focus in Windows Explorer
F10 . . . . . . . . . . . . . . . . . . . . .Activates menu bar options
ALT+TAB . . . . . . . . . . . . . . .  Cycles between open applications
ALT+F4 . . . . . . . . . . . . . . . . . Quit program, close current window
ALT+F6 . . . . . . . . . . . . . . . . .Switch between current program windows
ALT+ENTER. . . . . . . . . . . . . .Opens properties dialog
ALT+SPACE . . . . . . . . . . . . . .System menu for current window
ALT+¢ . . . . . . . . . . . . . . . . . . opens drop-down lists in dialog boxes
BACKSPACE . . . . . . . . . . . . . Switch to parent folder
CTRL+ESC . . . . . . . . . . . . . . Opens Start menu
CTRL+ALT+DEL . . . . . . . . . .Opens task manager, reboots the computer
CTRL+TAB . . . . . . . . . . . . . . Move through property tabs
CTRL+SHIFT+DRAG . . . . . .Create shortcut (also right-click, drag)
CTRL+DRAG . . . . . . . . . . . . .Copy File
ESC . . . . . . . . . . . . . . . . . . . Cancel last function
SHIFT . . . . . . . . . . . . . . . . . . Press/hold SHIFT, insert CD-ROM to bypass auto-play
SHIFT+DRAG . . . . . . . . . . . . Move file
SHIFT+F10. . . . . . . . . . . . . . . Opens context menu (same as right-click)
SHIFT+DELETE . . . . . . . . . . . Full wipe delete (bypasses Recycle Bin)
ALT+underlined letter . . . . Opens the corresponding menu

Keyboard shortcuts in 2020 when scrolling Documents

HOME . . . . . . . . . . . . . . to beginning of line or far left of field or screen
END . . . . . . . . . . . . . . . . to end of line, or far right of field or screen
CTRL+HOME . . . . . . . . to the top
CTRL+END . . . . . . . . . . to the bottom
PAGE UP . . . . . . . . . . . . moves document or dialog box up one page
PAGE DOWN . . . . . . . . moves document or dialog down one page
ARROW KEYS . . . . . . . move focus in documents, dialogs, etc.
CTRL+ > . . . . . . . . . . . . next word
CTRL+SHIFT+ > . . . . . . selects word
Windows Explorer Tree Control
Numeric Keypad * . . . Expand all under current selection
Numeric Keypad + . . . Expands current selection
Numeric Keypad – . . . Collapses current selection
¦ . . . . . . . . . . . . . . . . . . Expand current selection or go to first child
‰ . . . . . . . . . . . . . . . . . . Collapse current selection or go to parent
Special Characters
‘ Opening single quote . . . . . .alt 0145
’ Closing single quote . . . . . .  .alt 0146
“ Opening double quote . . . . . alt 0147
“ Closing double quote. . . . . . alt 0148
– En dash. . . . . . . . . . . . . . . . . . alt 0150
— Em dash . . . . . . . . . . . . . . . . alt 0151
… Ellipsis. . . . . . . . . . . . . . . . . . .alt 0133
• Bullet . . . . . . . . . . . . . . . .  . . . .alt 0149
® Registration Mark . . . . . . . . alt 0174
© Copyright . . . . . . . . . . . . . . . alt 0169
™ Trademark . . . . . . . . . . . . . . .alt 0153
° Degree symbol. . . . . . . . . . . alt 0176
¢ Cent sign . . . . . . . . . . . . . . . alt 0162
1⁄4 . . . . . . . . . . . . . . . . . . . . . . . alt 0188
1⁄2 . . . . . . . . . . . . . . . . . . . . . . . alt 0189
3⁄4 . . . . . . . . . . . . . . . . . . . . . . . alt 0190
Creating unique images in a uniform world! Creating unique images in a uniform world!
é . . . . . . . . . . . . . . . alt 0233
É . . . . . . . . . . . . . . . alt 0201
ñ . . . . . . . . . . . . . . . alt 0241
÷ . . . . . . . . . . . . . . . alt 0247

 Windows Explorer Keyboard Shortcuts

Alt + Enter . . . . . . . . . . . . . . . . . . . . . . . . . Open properties window of the selected icon or program
Shift + F10 . . . . . . . . . . . . . . . . . . . . . . . . . Simulate right-click on the selected item
Shift + Del . . . . . . . .  . . . . . . . . . . . . . . . . . Delete programs/files permanently
WINKEY + D. . . . . . . . . . . . . . . . . . . . . . . .  Bring desktop to the top of other windows
WINKEY + M . . . . . . . . . . . . . . . . . . . . . . . . Minimize all windows
WINKEY +SHIFT + M . . . . . . . . . . . . . . . . . .Undo the minimize done by WINKEY + M
WINKEY + E . . . . . . . . . . . . . . . . . . . . . . . . . .Open Windows Explorer
WINKEY + Tab .. . . . . . . . . . . . . . . . . . . . . . .Cycle through open programs on the taskbar
WINKEY + F . . . . . . . . .. . . . . . . . . . . . . . . . . .Display the Windows® Search/Find feature
WINKEY + CTRL + F  . . . . .  . . .  . . . . . . . . . .Display the search for computers window
WINKEY + F1 . . . . . . . . . . . . . . . . . . . . . . . . . . Display the Microsoft® Windows® help
WINKEY + R  . . . . . . . . . . . . . . . . . . . . . . . . . . . Open the run window
WINKEY + Pause /Break . . . . . . . . . . . . . . . Open the system properties window
WINKEY + U . . . .. . . . . . . . . . . . . . . . . . . . . . . . . Open utility manager
WINKEY + L . . . . . . . . . . . . . . . . . . . . . . . . . .  Lock the computer