tutorial inventor
Get Started (tab) > Tutorial Gallery > Quick Start, to learn 2D sketch tools/practices, 3D solid creation, and the basics for generating and detailing drawings:
Inventor can be optimized a lot (and you can avoid many mistakes) by just carefully adjusting your settings, so I would also recommend some homework for yourself on which application options to pick, besides other preferences. A good guide with many hints is this one:
https://cadsetterout.com/inventor-tutorials/101-autodesk-inventor-productivity-tips/
Depending on prior experience, there are many other sources on Youtube and some of our forum member pages which show best practices for design, as well as some of the advanced modules:
https://www.youtube.com/c/TheCADWhisperer/videos
https://www.youtube.com/channel/UCtX5M1OuE6Pks9t1omegCEQ