For 3D modeling, we recommended :
There a lot of software for 3D modeling but there is différent method to design object and all software go in different category.
Fusion and freecad goes in the same category and have the same philosophy.
Fusion 360 is only available on windows and Mac OS. If you are on Linux, use Freecad
On start, you have multiple choice of the tools what you want to use.
We use piece conception for object conception.
At first you have to create a sketch.
(1) Design you first form and extrude to have it in 3D.
(2) This the menu with all option for modify your object
(3) the is you work plan
(4) this is the history and diferent action that you do on the object