There are two options to convert cassette to CD, but whichever method you choose, you will be protecting your music, and making it possible for you to enjoy listening to it in a more convenient format.
The first way to convert cassette to CD is by doing it on your own on a computer, using your own computer skills. To do this, your cassette deck needs to be connected to your computer, and, using certain software to convert your music into files, record the deck’s output, so that you can burn the music onto a CD.
If you do not have the computer skills to do this, your other option to convert cassette to CD is to take your music to a reputable duplication shop, and let them do the job for you. Even though it will cost you a bit more money to do it this way, at least you will know that with the experts doing it for you, it will be done properly.