K3b is a special program on a computer that lets you make copies of CDs or DVDs. You know how when you get a new movie or game, it comes on a disc? Well, sometimes you might want to make a copy of that disc in case something happens to the original. K3b helps you do that safely and easily.
First, you'll need to put the disc you want to copy into your computer's disc drive. Then, you'll open up K3b and tell it that you want to make a "copy" of the disc. K3b will read the disc and create a special file that has all the information from the original disc.
Once that's done, you'll need a blank disc to put the copy onto. K3b will tell you how much space the copy will take up and let you know if you need a regular-sized DVD or a smaller one called a CD. After you put the blank disc into your computer's disc drive, K3b will start burning (copying) the information from the special file onto the blank disc.
Once the burning process is complete, K3b will let you know that your new copy is ready. Now you have an exact replica of your original disc that you can use instead! Just remember, it's important to only make copies of discs that you own and not share them with others without permission.