I've searched for the saving instructions but haven't found anything other than to export as a png. 

Would someone be so kind as to explain to me in steps how to save in poser 7 when you can't sit in one total session to complete the work and wish to reopen it onto the workspace later to work further?    What I did before was to click on File>Save As and gave the file a name and the only option was saving it as a .pz3.    

Although I could manage to get the character turned back around face forward, then when I tried to pose the arms and hands,  then use the dials to pose them,  she'd turn backwards again so that I couldn't see how the hand and arm was being positioned and once I stopped turning the dial, then she'd turn back around face forward again.    What causes that to happen when using  the dials? 

I know that I have to be doing something wrong, but I just don't know what I'm doing wrong to cause it.