One of the things I do in my spare time is install Linux distros and review them. One thing I noticed is that many have an application that runs after install to help new users get started. One of the best examples I have seen is Manjaro Hello. I think if Haiku had something similar it would help new users to get started quicker. It could have a section for frequently asked questions and solutions to common problems. I would recommend having the information stored locally instead of linking to a webpage, in case the user has trouble connecting to the web.
Below is a screenshot of Manjaro Hello.