These are my picks for best free 3D Design software for 2019! If you're just getting started in the wonderful world of 3D Design/CAD/Organic Modelling then look no further.
Software links and tutorials to get you started!
Tinkercad - https://www.tinkercad.com
Design a Headphones Holder using Tinkercad - https://youtu.be/dDLmbqHTQXw
Fusion 360 for Hobbiests (free 3yr licence) - https://www.autodesk.com/campaigns/fusion-360-for-hobbyists
CAD for Newbies Tutorial Series - https://www.youtube.com/playlist?list=PLTCCNNvHC8PC40tcEqaJcgUMb97LNkLIn
Blender 2.8 (currently BETA) - https://www.blender.org/
YanSculpt's Excellent Sculpting Tutorial - https://youtu.be/N4D6F7mhi4I
Support Maker's Muse on Patreon
50 3D Printing Tips and Tricks - https://gumroad.com/l/QWAh
3D Printing Essentials - https://www.amazon.com/shop/makersmuse