Thanks Guys for the response! Do programs like Poser produce files, that can be printed directly, or do you have to fiddle around with them a lot? And which programs would you advice to learn? Tinkercad, sketchup, Poser, Revit.... I guess if you want to do different things (like figurines, architectural models and jewelry) you need to use different programs. Which are powerful, easy to use and produce stuff that you can print?

And would it make sense to get a cheaper, consumer printer first to learn the ins and outs of 3d printing before going for a professional and expensive printer? Something like the Ultimaker 2?