Is there an easy to follow documentation for dosbox-x? And can it work with pre-built images? I have tried to use it a few times but got overwhelmed by all the

Is there an easy to follow documentation for dosbox-x? And can it work with pre-built images? I have tried to use it a few times but got overwhelmed by all the options. From the screenshot it looks exactly what I want (only for windows 98 though).