Unleashing power of Firefox – Simple Tricks

Absolute beginners who have just started using Firefox or some of them think that there is more to explore. Objective of this hands on session is to upgrade the user level of newbie user to power user of Firefox.
Session : Hands-On
Aim: Fun whle learning tricks (some jokes you might have read on Whatsapp).
Objective:  Be the power user and a teacher who can now handle firefox like wise person.
Expected Audience: 8-10
Questions for self-evaluation to be filled by audience:   http://goo.gl/87s0Yv

No particular prerequisite. 1. Only able to open browser 2. Surf Internet 3. Do as directed and you are afoot!
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
2 + 11 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.