What are some good computer tricks that are not commonly known?

Some important Windows Keyboard Shortcuts one can easily remember and use!

1. Privacy Saved: We often find ourselves in a situation where we are looking at something on our PC and it needs to go off immediately, at home maybe someone is coming to call you , or at work place your boss is coming at your cubicle, that doesn’t matter but it needs to go!
   --All one needs to do is press the Windows key + D key and boom you land up at your desktop. Phew!

1. Rename a file: Renaming a file via a mouse requires 2 clicks! Not worth that much of time. 
   —Just select the folder you want to rename and press F2. Rename it! Done!

1. Open closed browsed tabs: Sometimes you open up your web browser tab for finding something of your use, and open some 50 odd tabs, and you know something is important in there, you start closing them one by one and oops! You closed the tab of your interest!
   —Simply press Ctrl+Shift+T (works for all browsers) and it starts opening up your previously closed tabs.

1. Snap Windows: If one wants to do multiple things simultaneously, say for e.g. watch a tennis match on one window, simultaneously browse electronic items from some website.
   Select one window on your screen, press the Windows key + right/left arrow key to shift them accordingly.
   To minimise the window: Windows key + down arrow
   To maximize: Windows key + up arrow

1. Quick File Copy: There’s no need to do Ctrl c and Ctrl v to copy paste a file. Just hold down the Ctrl key and drag the file over. It will instantly make a duplicate file once you release the mouse.

1. Deleting Lines made easy: We often write up something we are about to post on social media for e.g. and when we take a glance before posting it, we realise that we messed up something. 
   —So, instead of deleting letter by letter, just press Ctrl + Backspace. It deletes word by word and saves a lot of time.

These are some of the tricks I use daily, though there are many more of them one can find online or here itself.

Do give it a try and your time won’t fly!

Cheers!