Technically that is the whole point, you don't really have to know how to use it =) As long as you are able to use Chisels & Bits and know how to download a program from oppm, you should be fine. The only thing that might need a bit of tinkering is if you want to port a design to 1.7, but usually the texture picker from OC and doing some basic search & replace in a text editor will get you a long way there as well.
If you stay in 1.8, usually the only thing you should have to do is
Make your C&B block and hold it in your hand
Press the hotkey
open a new file in OC, paste the clipboard, save (eg to 'model.3dm')
install print3d from oppm
make sure you have a 3d printer and it's filled with camelite and a ink from a printing cartridge
type 'print3d model.3dm'