There are several resources available to users for learning how to use Bryce. The Bryce Artist Guide is the user manual for Bryce that outlines every feature available in Bryce and explains how and why to use them. You may find the Bryce 7 PDF here:
Aside from the Bryce Artist Guide, there are also online discussion forums where you can give and receive helpful tips and tricks with other Bryce users. Visit the BryceTalk forum (http://forum.daz3d.com/viewforum.php?f=38) to ask and help answer questions about the latest version of Bryce.
There are also tutorials available online that have been created by users like yourself. These tutorials can be found in the Bryce Tutorials section of the Support hompage (http://www.daz3d.com/i.x/tutorial/0/-/?tut_cat=10).
You may also find this section of the New Users' Forum for Bryce helpful: