It isn't necessary to do anything for copyright protection to exist. In most countries copyright is established as soon as an original work is completed and "fixed in a tangible medium". If you decide that you do want to formally register your copyright you will have to consult the Copyright/Intellectual property office in your area.
If you have recorded a CD of entirely your own original work (for example, you performing songs you wrote yourself), it is automatically protected by copyright. This gives you the exclusive right to copy, alter, distribute, or publicly play the CD.A CD created by someone else gives those same exclusive rights to them, so if you copy their CD, you're infringing on their rights.
Copyright significantly predates the CD, but nearly all CDs are protected by copyright.
No.
Making a mix of your favorite songs and burning it to a CD is duplication of each of those songs, which is one of the exclusive rights of the copyright holder. The songwriters and artists who created each track have the right to sue you for up to $30,000. They probably won't.
The downloading is illegal for sure; the giving may also be depending on the copyright laws where you live.
You would have to get permission from the copyright holder of each song that is on the CD!
Yes; all console games are protected by copyright for 95 years.
Copyright - band - was created in 1990.
The Copyright Association was created in 1872.
Yes.
no because it is copyright and you will go to jail
Copyright protection is automatic as soon as the work is fixed in a tangible medium. Mailing it to yourself, the so-called "poor man's copyright," is unnecessary and ineffective.