On the right side of the DAZ/studio 4 UI you should see a column with several tabs on it.

One of these is the Content Library. Right-click this tab and you'll get a list of options. One of these is the Search Harddrives for files. Another is  Scan Known Directories. Each of these will bring up options to get your stuff.

Also, the column on the left side will offer you access to context sensitive tutorial videos. THese are a great help. 

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...