It is just of OpenSuse installation. For more thorough help see the documentation.

Before Installation

Before starting there are a few things you should be aware of.

System Minimum Requirements :

CPU: AMD64 or Intel64 processor  
RAM: 1 GB physical RAM (2 GB recommended) 
Disk Space: 5,0 GB for a normal installation (more recommended) 
Sound and Graphics Card: Most modern cards are supported 

Boot the iso to a DVD or Pen drive :

Downloaded OpenSuse iso files and burn or boot your pen drive.

Here the Link:

BIOS Setup
If your computer won’t boot from the DVD or USB media, check that the computer BIOS is configured to boot from CD/DVD or USB.Dual Boot (OpenSuse and MS Windows on the same computer)
Having OpenSuse and MS Windows installed on the same computer is usually fairly simple if MS Windows was installed first.

Minimum System Requirements :

any AMD64/Intel* EM64T processor (32-bit processors are not supported) 1 GB physical RAM (2 GB or more recommended) 3 GB available disk space for a minimal install, 5 GB available for a graphical desktop (more recommended) Supports most modern sound and graphics cards, 800 x 600 display resolution (1024 x 768 or higher recommended)

Installing OpenSuse Leap:

Use these instructions if there is no existing Linux system on your machine, or if you want to replace an existing Linux system.

Insert the OpenSuse Leap DVD into the drive, then reboot the computer to start the installation program.

Click your boot key on your keyboard :

f12 or f10 or f9.Select Installation on the boot screen, then press Enter. This boots the system and loads the OpenSuse Leap installer.

The Language and Keyboard Layout are initialized with the language settings you have chosen on the boot screen. Change them here, if necessary.

Read the License Agreement. It is presented in the language you have chosen on the boot screen. License Translations are available. Proceed with Next.

You can choose your Environment Like :

KDE Plasma(GUI)
GNOM(GUI)
Other is just use CLI Server mode.

Create Partition Setup :

Select a disk to which to apply the proposal.

Select Expert Partitioner to your own create partition which you are choose.Otherwise just CLICK next auto partition create. Now I choose auto.

Select the clock and time zone to use in your system Proceed with Next.

For security reasons it is also strongly recommended not to enable the Automatic Login. You should also not Use this Password for the System Administrator but rather provide a separate root password in the next installation step. Proceed with Next.

Use the Installation Settings screen to review and—if necessary—change several proposed installation settings. The current configuration is listed for each setting. To change it, click the headline. Some settings, such as firewall or SSH can directly be changed by clicking the respective links.

Booting

Firewall and SSH

By default, the Firewall is enabled with the active network interface configured for the external zone for configuration details.

The SSH service is disabled by default, its port (22) is closed. Therefore logging in from remote is not possible by default. Click enable and open to toggle these settings.

You can entry your Name , username, Password and CLICK Next.

You can entry you root permission or you can skip and CLICK next.

CLICK Firewall and SSH and enable Firewall and SSH connection to security and remotely connection your Computer.

Now CLICK install.

During the installation, the progress is shown in detail on the Details tab.

After install your Operating System Reboot your Desktop.Enjoy a new environment.