You could try this tutorial:

http://www.daz3d.com/support/tutorial/tutorial.php?id=100

A lot of the tutorials out there are aimed at very specific aspects of Poser, which is fine, but this one is a more general introduction.
Which release of Poser are you using?   I addition to the figures included with that release, are you using any of the other figures, e.g. from DAZ, or from Content Paradise?