Here Can I Earn Free Bitcoin Please Tell Me..
try to find your answers first before making the thread, because a question like this already exists.
Go and read the Beginner & Help section of this forum, there are a dozens threads there that answer your question to the very detail. However let me tell you about a few ways.
1. Signature campaign (when you reach Full member and above 3+ months needed for that here, just post quality posts and not questions like this which is already answered several times as I said above)
2. Solve captchas (If you are a fast typer you can register to megatypers and then make some money there, they have also an option to pay your earnings in bitcoin if you have 1.5 USD minimum, payment every monday)
3. Trading (Involves high risk,not advisable)
4. If you have skills, you can check xfreelancer , you can work there and get paid in Bitcoin, and also if you check the Services section of this forum, you may find some jobs if you have skills.
5. Buy the coin even in miniature (0.001 btc and up ) whenever you feel the price is right or the price has gone down and save it in your wallet.
Also don't forget to read thoroughly the section Alternative Clients in this forum to choose the bitcoin wallet most suitable to you. Don't rely too much on blockchain.info wallet although they have added extra level of security its still an online wallet.
This should be a good start for you.