You can’t really ruin anything right away but you might find that the application freezes for no apparent reason while using it. Otherwise, it’s a good idea to read the manual before you begin. It displays a user-friendly interface or you can say that it does as long as you are familiar with what it’s intended for. The application is build in Java and uses JNA technology. In a game for example, you might want to increase the amount of gold or experience you have.
Memory Editor is a tool designed to allow you to hack game and application memory in order to perform various modifications to them.