The DAZ content is best installed with the DAZ Install Manager which may be beyond your skill level, ATM.  Unless you intend to learn DAZ Studio in addition to Poser, some of that content is exclusive to DS and not easily converted for Poser use.  However, some content will have a Poser installer, except you need to be familiar with the file folder hierarchy to extract those files. 

The second screencap appears to be an assortment of files of unknown origin.  Examining each ZIP file may reveal which software they belong to, but, again, you need to be familiar with each software's folder hierarchy.

The third screencap contains Renderosity-purchased content.  Those should be accessible and installable through the Poser Library Purchases Tab.  It appears that you downloaded those files as well if you did your installation within Poser.