If you want something free and simple (basic but not too bad), I've cut my teeth 3-D printing with tinkercad. I does most of what I want. I'm trying to register for fusion 360 (I'm not a student*), the hobbyist option should be OK for me but I'm struggling with registration -I don't like the questions about e-mail addresses, or the fact I was presented with others commonly using talktalk domain addresses when I started registering. You can try fusion 360 without committing for free first by the way. I know 2-D cad but struggled with fusion 360 though I thought it much more intuative as an long time Autodesk user. Now I've "mastered" tinkercad I think I'm much better prepped.
*I tried that before but it asked me for proof of my institution?
Rich