You can find out a lot about how Konqueror works without needing to read this entire document if you take advantage of the Bubble Help and What's This ? features.
Bubble Help means that if you hover the mouse pointer over a Toolbar button it should bring up a terse description of what that button does.
What's This ? is invoked by the Menubar Help->What's This ? item, by the Shift-F1 hotkey, or by just LMB clicking on the question mark near the top right hand corner of a window, and changes the cursor to show a question mark alongside the arrow.
When this question mark is visible, a LMB click won't actually do anything until you have clicked on a control (or the text alongside it) which supports What's This ?, in which case it will display a reasonably comprehensive description of what the control is supposed to do. Most of the dialog boxes that Konqueror brings up support the What's This ? feature.