@mbondY2CD6
Where to start, where to start....
Inventor is different than Fusion 360 as Fusion doesn't follow real-world conventions.
In the real world a part is a part. A part is not an assembly, apart is not a drawing (2D intended for sheet of paper).
In the real world an assembly is a collection of components (parts or subassemblies).
In the real world a drawing is a 2D representation on a sheet of paper.
Fusion uses one file for all of this.
Inventor uses a separate file for each:
Part file is *.ipt
Assembly file is *.iam
Drawing file is *.idw (or *.dwg)
If you relate these to the real world equivalent then it is quick to get over this hurdle (you can (and should) put all three files into a project folder, so nothing to get concerned about - one folder(Inventor) or one file(Fusion), who cares. If you stick with it long enough you will see there are very very significant advantages to the Inventor real-world representation of, well, the real world.
There are a bunch of Tutorials in Inventor, not sure of a series that take you step-by-step through a project as it has been 15+ years since I went through the tutorials.
I am in the process of starting a YouTube channel to do exactly this, but I have only just started.
There are a couple of examples of Fusion and Inventor equivalent tutorials here.
The CADWhisperer
I see that you have an interest in Weldments.
I happen to teach a CAD for Welding class and will be adding a bunch of content to my YouTube channel, but that is weeks away from being ready.
If you can Attach one of your *.f3d or *.f3z projects here - I can create a quick video of model/assembly/drawing with welding annotation video using one of your projects.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional