Documentation & support
Help is always welcome.
Apart from an overview of its features, the KDE UserBase Wiki also provides hints, tips and various tutorials on how best to use Dolphin. These cover file system navigation, using custom icons for different folders, using the bulk rename feature, and more. The File Management page on the wiki discusses at length the interface, panels, bookmarks and other features. Although there isn’t a dedicated forum board, you can use the official KDE forums should you need any assistance. The Handbook, which you can access by pressing F1 from Dolphin, is another useful resource.
The GnomeFiles help discusses all of its features and is split into different categories such as common tasks, file related tasks, removable drives and even features some tips.
In addition to a user-contributed Wiki hosted on GitHub, SpaceFM’s user manual on the website provides a thorough introduction to the tool. The user manual also discusses in detail the different configuration options and the functionality provided by the Panels, Path Bar and so on. User-contributed plugins are listed on the project’s wiki.
The forums hosted on SourceForge are an additional resource and you can also connect with users and developers on the #spacefm IRC channel.
Accompanied with screenshots, the documentation for Thunar covers various aspects of the file manager such as the interface, working with files/ folders and useful plugins.