Soldering machine

I picked up a Pro-Craft electric soldering machine (identical to
Rio version - they probably make the one Rio sells) at a garage
sale. Seems to have all parts and very basic instructions
included. Does anyone have any tips for using it that will make
my life a little easier? Specifically, is it better for small
things ( jump rings, etc.) or larger areas? Best flux, holding
work, any ideas.