I use AutoDesk Inventor - it works in a very similar way to Solidworks but I prefer some of the features and stress analysis/3D animations and genuine simulations.
Once you have the basic's of any CAD program, they all become fairly similar to use for basic things.

Here's my first play around with an animation in Inventor.


And here's a genuine Simulation with 13kg steel block on the end of the flipper running at 20 bar John Reid did that one when we were working a few things out.

And some very useful stress analysis on the flipper arm. This shows where any weak points are when the full force of the ram is pushing on it.

3D Cad packages really are worth learning. It will add a huge amount to your CV and employability if your looking into anything engineering/design related.