How to get it for Free!
Go to the Autodesk Education Community website and create a new account with your SFA Email address ending with .EDU. <- Important!
Now go to the Products menu and find "Inventor Professional". Alternatively, you can try this link: https://www.autodesk.com/education/edu-software/overview
Install Inventor Professional for Windows 64.
Get Started!
This video playlist will help you quickly get started with Autodesk Inventory: https://www.youtube.com/watch?v=ODBUG6SKNSw&list=PLtakexwsjr-A7v36qlffbzK1VelyP5c3c