The Articles

Every Gmail user has two email addresses.

For example: if you have a Gmail id: xyz@gmail.com, the second one isxyz@googlemail.com.

This will be useful for opening multiple accounts in a website or app.

For example, In Redbus mobile app, if you are new user (i.e., if you use new email id) you will get flat 100 rupees off on ticket booking. If you have already used xyz@gmail.com you can still use xyz@googlemail.com and take advantage of the offer. You will receive your ticket to your normal inbox itself. Thank me for saving your time from creating a new email account.

Ref: All Gmail Users Have Two Email Addresses


The dots in the Gmail id doesn't matter. 

Lets say your gmail id is someone.initial@gmail.com, then if somebody is sending email id to so.meoneinitial@gmail.com orsomeoneiniti.al@gmail.com then the email will be delivered tosomeone.initial@gmail.com inbox itself. 

Create unlimted email ids by adding + anything to your email id.

Say your email id is xyz@gmail.com, then if you add any letters after your name by adding '+' symbol, the emails will be delivered to xyz@gmail.cominbox itself. This is a nice trick when you are registereing in a suspicious website. Some websites will sell your email ids for money, and the buyer will spam advertisemts to your inbox. Say http://randomwebsite.com  is a suspicious website and you want to register in it for some reason. While registering give your email id as xyz+randomwebsite@gmail.com. The emails from the website will be delivered to xyz@gmail.com, and you can simply fliter out the message from this website by typingxyz+randomwebsite@gmail.com in search box. Also if you find that the spam mail have the receipent email id as  xyz+randomwebsite@gmail.com, then it means that http://randomwebsite.com has sold your email id.
Source:Quora(Vijayenthrian Subramaniam).

(1) How to know the uploader of any image downloaded from facebook ?

Photos downloaded from facebook has naming convention like 

10553866_683772571716631_1387821185946217935_o.jpg

Now if you want to go to the profile of the owner of the downloaded photo, just copy the number between first underscore and second underscore , so the number is

683772571716631

Now goto  http://www.facebook.com/68377257...
and you landed at the page of the picture on facebook.
Give it a Try.

(2) How to be greeted by your computer every time you start your computer?

Do you want to be greeted like Iron Man? I know , You don't have smart Operating System Like JARVIS but your windows also can do this for you.
To do this , first make a file Welcome.vbs     .
Open notepad and simply write

    speaks="Welcome back Sir or anything you want."
    Set speech=CreateObject("sapi.spvoice")
    speech.Rate = -3
    speech.Speak speaks

NOTE:-    -3 Denotes the rate of speech , you can change according to your choice .

and save it as Welcome.vbs   .
It will look like this  



Now check if it is working or not so just double click it, it will read the texts .

Next to make it work at windows startup every time for Windows 7/8/8.1 , just put this file to

    C:\Users\<<Username>>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\

Note :- You need to unhide the hidden files and folders because the  AppData  folder comes hidden by default in windows.

In Windows vista put this file at

C:\Documents and Settings\All Users\Start Menu\Programs\Startup\

Now on every windows startup it will greet you.

Edit:-The default voice for the speech in Windows 8 is a male voice of Microsoft David. I you want to change it to Microsoft  Hazel's or Microsoft Zira's voice then  To hear these voices and configure them, open Control Panel > All Control Panel Items > Speech Recognition. In the LHS pane click Text to Speech. Here, you can control text to speech properties and hear each of the voices by selecting the voice from the drop-down menu and clicking on the Preview  Voice button.

You can also select the voice speed by moving the slider, the audio output and the preferred audio device by clicking on the Advanced button. 
Thank you  Nakul Bansal  for your suggestion.

(3) Some trick for Gmail users 

To open only unread emails , just type is:unread in search box .
You can also open is:starred , is:read , is:muted , is:chat .



if you want to open unread emails from inbox only then type
is:unread label:inbox  in search box.



For other lables just use label:spam , label:chats e.t.c  and You can combine the keywords according to use.
Source: Quora(Rahul Jha).

1. Double click on upper left corner to close any window (windows os) ;)

Note: Try this on different window as it will close your browser!

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2. Increase/Decrease the speed of process in your computer

• Start Task Manager. (win+r -> taskmgr)
• Switch to details tab.
• Right click on any process that you want to speed up and change its priority according to your need. 
  
• And after you are done, remember to reset the priority to initial/default value as it can affect the normal processing of the system.

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3.  Here is how to download Instagram images or any other:

• View the image
• Press ctrl+shift+i or right click on image and select Inspect Element.
• Copy address of the image and open.
  
  
  
• Voila, with the original sized image.

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4. Google search within  "   " to get exactly what you want.
  Eg: "half blood prince"

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5. Reset Ubuntu Administrator password:

• Reboot into recovery mode.

• Select the root option
  

• Type this: mount -rw -o remount /

       This remounts the root "/".

• root@ubuntu:~# passwd Administrator

       Enter new UNIX password: "Enter the desired password"
       Retype new UNIX password:
       passwd:  "Re-enter"    password updated successfully        
       root@ubuntu:~#

• Resume the normal boot and login with the new password that you just created.

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6.  Open command prompt of any location without changing directory. 
     Clear the address and type cmd in the file explorer address bar.

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7. Open a notepad and paste this code to make a utility software in windows that speaks whatever you type in it. Save it as anyname.vbs

Dim message, sapi
message=InputBox("Enter text to speak!!","ATT Text To Speak")
Set sapi=CreateObject("sapi.spvoice")
sapi.Speak message

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8. Press ctrl + alt + any arrow to change the orientation of the screen.

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Source:Quora(Sumit Kumar).

Print a book of selected Wikipedia articles.  

1. Go to the Wikipedia main page and click on the "Create a book" link in the left sidebar. 
   Wikipedia, the free encyclopedia
   
2. Click on "Start Book Creator".
   
3. After that, you will get the following section on any wiki page you visit.
   
4. Just visit the Wikipedia pages you want to collate as a book and keep clicking on the "Add this page to your book" link.
5. After you are done adding, click on "Show Book".
   You will reach the following page where you can customize the book - add chapters. reorder the articles etc. 
6. Download the book in any format you like using the link at the right-bottom.
   
7. Enjoy. And thank Mr. Jimmy Wales and his team (Mr. Tom Morrisand others).

This feature can be used to read offline about topics with multiple Wiki articles.

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Edit:
Here's where you can find all user-created and curated books :Category:Wikipedia books (user books)

Here's a list of books Deepak Mehta  have created:

1. User:Draconiand3v1l/Books/The Best of Wikipedia
2. User:Draconiand3v1l/Books/1CreepyWiki
3. User:Draconiand3v1l/Books/1Lists
4. User:Draconiand3v1l/Books/Batman                                                                                                      Source:Quora(Deepak Mehta).