can some one guide me i am new

1. Of course you can earn money. You could sell something or you could work for it. If you mean mining then it's more difficult to answer. You will need to make a large investment in equipment. Your investment in hardware may take years to pay off or may never be profitable. You are risking capitol, not buying in. If you have $20K that you are willing to risk and may completely lose, then it may be something to try. But this is not something you do with a normal computer.

2. If you want to start mining you will need to know the bitcoin protocol very well. You will need to understand everything in the white paper and have a good command of mathematics and cryptography. If you don't know about the nonce, or rainbow tables and such, you are at the infancy stage of your learning.