What follows are some computer basics as it pertains to Wurm Unlimited. For instance, installing mods.

Folders/Directories are container designations for holding files. In the old DOS days folders were called directories. In the modern age directories are now called folders. Folders typically have a folder icon. Folders are used to organize files. Folders can have folders within folders within folders, and files in them, or they can be empty.

Files on a computer are arranged in folders/subfolders. Some folders are system folders used by the operating system, which contain system files that are protected to keep them from being able to be modified or deleted (which would then cause the operating system not to function properly).

On the Windows command line folder hierarchy is represented using backslashes. For example, a folder named pictures that has a sub folder named nature and under that a sub folder named trees is represented as pictures\nature\trees. On Linux, forward slashes are used the same way; pictures/nature/trees.

Steam game files are located in what is called your Steam library, stored on the drive you selected during install. The folder you will be access most is the WurmLauncher folder found under the Wurm Unlimited folder (i.e. Wurm Unlimited\WurmLauncher). These folders are found under C:\Program Files (x86)\Steam\steamapps\common if your Steam library is on drive C on Windows, or home/username/.steam/steam/steamapps/common on Linux.

The easy way to locate the WurmLauncher folder is to open Steam, go to your Library, find Wurm Unlimited in your game list, right click on it and Manage, Browse Local Files. This will open the Wurm Unlimited folder where you will find the WurmLauncher folder.

The WurmLauncher\PlayerFiles folder is where configuration files and logs are stored. If you want to back up your configuration, keybinds and logs, copy the PlayerFiles folder to a backup location. Restoring is as simple as copying your backup PlayerFiles folder to the game's PlayerFiles folder.

Mods are stored in the WurmLauncher\mods folder. Most mods come in ZIP file format (compressed; see the Compressed Files section below), and contain a mods folder under which the mod files are located, and a .properties file for configuration settings. If a mods ZIP file contains a mods folder, it can be extracted to the WurmLauncher folder. If it does not contain a mods folder, you will need to extract it to the mods folder. See this video for a more detailed explanation.

• Cut - Cut text or file(s) to move to a new location using paste.
• Copy - Copy text or file(s) to make copy at a new location using paste.
• Paste - Paste text or file(s) that have been cut/copied.

Windows uses CTRL-X (Cut), CTRL-C (Copy) and CTRL-V (Paste), or you can use the right click menu. Most software has built-in functionality for copy and paste. The vast majority use these conventional shortcuts, but some use slight variations.

Compressed files are sometimes called archives.

Compressed files are files that contain folders/files in them that have been reduced in size by a compression algorithm. The algorithm achieves this by removing redundant data and rearranging it, all the while maintaining the integrity of the data.

Compressed files make it easy to move multiple folders/files from one location to another as they are contained in a single file.

When you uncompress/extract a compressed file, you extract copies of the folders/files to a location or your choosing. A compressed file can be used to extract its files as many times as you want as it remains unchanged by the extraction.

Windows has support in File Explorer for certain compressed file types, like ZIP files, and treats them like folders. You can copy files out of a compressed file with File Explorer, which effectively uncompresses/extracts them from the file to the destination.