To get the best out of KHelpCenter you must first create the searchable index files. This can take a minute or two, and it's worth opening the 'Details' so that you can watch it build the indexes.

You are most likely to use KHelpCenter from a KDE application, where the manual for the application you were using will open in the main window. The left-hand panel has three tabs. The first tab, , gives you links to a great deal of general information. If you are new to KDE Plasma 5 you will particularly want to take a look at the and the .

The tab lists terms alphabetically or by topic.

The final tab, , offers the choice of searching UNIX manual pages, application page, or both. You can select 'AND' or 'OR' search on terms.