(As a computer enthusiast, I believe that there must be a lot of cool software at hand, but usually these software have various restrictions, so do you often have a headache because of a small registration code? Is it to find a software registration code? But have you thought about cracking the software yourself to get the registration code? This document has collected three tutorials, from basic to in-depth, there are many experiments, the process is detailed, and each step is accompanied by illustrations , intuitive and simple to understand. It can learn a lot of technology and the use of many tools and software.)