Copyrights allow people like painters, musicians, writers, and software developers to have some control over how their work is used or shared with others.
Trade marks are symbols (such as logos, brand names) which act as a badge of origin to allow consumers to recognize the product of a particular company or brand. They allow people like clothing and product designers to protect their product's reputation. Their products have a good reputation because of the money and effort these people have invested in them.
Patents help people protect their new technological innovations. Owners of patents have the exclusive right to exploit their innovations.
The information in this tutorial shouldn't be considered legal advice. If you have specific questions about the law or whether your item is legal, you should contact a lawyer.