How to enable 'Twinkle' tool in your Wikipedia account?

For activating Twinkle tool in Wikipedia, you must be a registerred user on Wikipedia and your account should be 5 days old at-least. 

Now you have to do the following steps:

1. Login your Wikipedia account
2. Go to the 'Preferences' category in top menu bar
3. Click on 'Gadgets' on 'Preferences' page
4. Select 'Twinkle' on 'Gadgets' page
5. Save the changes

Remember: Your account must have at-least 10 edits to reflect 'Twinkle' tool in your account