Hi, not sure if you have read the Phoca Documentation here:
1) Most of users say, that it is great that such free extension has a lot of documentation, so it is very subjective to say, the documentation is not clear enough - of course documentation of Joomla! needs to be read too as it is fully Joomla! component. And of course, not everything can be added to documentation and sometimes it is not clear enough, e.g. if the feature should be documented in Phoca or in Joomla! And of course, the Phoca project is made by one human, so it is really hard sometimes to update the documentation. And more harder to update documentation for extension which is done for Joomla! which is not stable LTS yet (Phoca Gallery 4 and Joomla! 3 - first all the plugins and modules needs to be written and then the documentation can be updated.)
2) "person with limited experience" - the next thing what users appreciate, is, there are Jonathan's comments. Jonathan stared with Phoca Galley and he was very new to Phoca and Joomla! and after he understood it, he gave me the offer to make comments for novices - so Phoca Gallery documentation includes comments for novices made by Jonathan who knew the novice's problems as he was in fact novice while writing the comments - the documentation.
So I think, this can be called: "Phoca for Dummies" and if you will use Phoca Gallery again, will be great you can write comments too, so this will help other people. I will be glad to implement such comments into documentation. And if you write new parts of documentation, this will be great too. You will be welcome.
Anyway, always if you will have problems which you cannot find in documentation - http://www.phoca.cz/documentation then just ask in Phoca Forum - http://www.phoca.cz/forum/ - I or Benno we are trying to answer all the questions in the forum.
And of course before reviewing any free extension, you should know the following:
Thank you for understanding.