1. Install Maven before installing nexus. (For details, see the JDK installation tutorial)
2.put nexus-2.0.2.rar in D: \ teamwork, right-click and decompress it to the current folder. The folder contains two folders: nexus and sonatype-work.
3. Open D: \ teamwork \ nexus-2.0.2 \ bin \ JSW \ windows-x86-32 (Open D: \ teamwork \ nexus-2.0.2 \ bin \ JSW \ windows-x86-64 for 64-bit systems)
4. Double-click to execute the install-nexus.bat (after installation, nexus will be added to Windows Services and will be automatically started as the system starts)
5. Double-click to execute the start-nexus.bat
6. Open the browser and enter http: // localhost: 8081/nexus/. If this page appears, the installation is successful.
7. Click Log in the upper-right corner, and enter the default username: Admin and password: admin123 to log on.
Sonatype nexus installation tutorial