Need help choosing a 3d cad program

[C-5Quad]

I love modifying and making adaptions to make my life easier and more fun. But I am a quadriplegic so making custom parts with my hands not working is beyond difficult. I want to learn how to use a 3d cad program so I can design my own custom parts and buy a 3d printer to make prototypes.

I have seen a few members here post some cad designs and I'm hoping they can point me in a good direction. I don't mind a steep learning curve I am mainly looking to get my feet wet and see if it is something I can get into. I won't invest in a printer unless I can become efficient in cad first.

I was thinking about autocad student but am open to sugestions.

Any advice is welcome as I have zero experience in any 3d design.

Also I'd like to be able to learn as much as possible at home mainly online tutorial videos or something as I don't have the funds to attend cources.

Thanks