hello anyone tell how to mine bitcoin freely,i still did not understand and is this possible or not?
You can still mine using CPU and GPU but they cannot make profits. Mining is basically for big companies and people who invest millions into ASICs. For a small home miner, it is impossible to mine and get profit since the hashrate and difficulty is rising very fast. I wouldn't recommend you to mine since GPU or CPU as they are too slow compared to ASICs and ASICs may not always ship on time, by the time you recieve them, they wouldn't be profitable already. You can try cloudmining although risk are involved as the operator may run off. Try GAWminer, their rates are pretty reasonable and have proof of mining actually going on.