Help with animating models

For the last few weeks I've been trying to animate a simple model of a skeleton with models made in Techne. Should I drop it and move to Tabula or does it not matter? The main issue is that the models just don't animate even if I select to animate it's parts (does that feature even work?). I've also tried making some models and animations in MCAnimator however that also didn't seem to work. I might be doing something wrog, but I just don't know exactly what.