How to earn more bitcoins for FREE?

I am newbie to bitcoin and I would like to invest it but I don't know how. I do research on google but I can't really get what they saying in their tutorial.

I hope this blog can answer my question with perfect and exact explanation of it.

Questions that come up in my mind:

• Is there anybody can teach me here how?
• What is bitcoins mining? 
• How it works?
• Where can I invest bitcoins mining securely?

Any tutorials and idea regarding to bitcoins mining are highly appreciated here. Everybody are welcome to share their ideas, techniques and opinion here. You can use our comment box system to post your answers for the participation for this thread. Thank you...:)