PKP has extensive documentation on how to install, configure, and use our software at PKP Docs.
Online training videos are available at PKP School. You just need to register for a free account to take the tutorials.
If you can’t find the information you need, search the forum, as someone else might have asked the same question. If don’t find anything, feel free to post your question. The more detail you can provide about the issues you’re having, the better.