Another +1 for OnShape. Free to use, tons of tutorials. If you learn OnShape well, you would be able to use SolidWorks with very little catching up (of course SolidWorks as a ton of extra advanced features, I’m speaking generally). Fusion 360 is also pretty cool, competitor to OnShape. If you learn Fusion 360 well, those skills will translate best to AutoDesk Inventor.
In the big picture, any skills learned will translate. But OnShape was created by the original founders of SolidWorks, so it has a very similar feel. Have fun!