These are all accessible from the "K" menu:
KFM is the KDE file manager.
It is also able to display web pages and to browse the web. To
switch from HTML view to regular file view, go to the
Display menu. To open a file, click ONCE on it.
A contextual menu pops up when you right-click on a file.
The KDE control center
allows you to customize KDE (colors,
window manager behavior...) and to get informations on your machine.
Terminal Emulators
xterm,
kvt are two Unix-terminal emulators.
XEmacs
xemacs and
emacs are two versions of a mythical unix application:
emacs is a super-powerful text editor (not a word processor!), fully
reconfigurable and programmable (in Emacs Lisp), that works both in text or graphics mode (X-Windows).
It can highlight in color a C or Java or C++ or whatever program ;
it provides a sophisticated mail and news reader, etc...
Beware: it is kind of hard to learn, but once you know it, you will not
be able to do without it.
The Gimp is a powerful image manipulation program,
Photoshop-alike. Try for example to open the images in /usr/doc/gimp-manual-1.0.0.
Once the image is loaded, you get a menu by right-clicking on it.
Try also "script-fu" in the Xtns/Script-Fu/Logos menu.
Netscape
Communicator is the famous internet tool, used to browse the
web, handle your e-mail, create web pages etc.