I tried
AutoCAD many years ago, when it was strictly 2D. It was owned by a friend and, although I was very impressed, it was far too expensive for me. I then tried a very simple (and cheap) system called
EasyCAD which ran under DOS. I used it for several years until I saw a magazine which was giving away a program called
TurboCAD. It stated that it could do 3D, so I purchased the magazine and installed TCAD on my computer. The 3D stuff was Mickey Mouse and rather disappointing, but it was rather better at 2D than EasyCAD, so I switched. I became rather proficient at TCAD but, even though the 3D facilities were greatly improved, it was very cumbersome and, after seeing a
SolidWorks demo, began hankering after a
fully parametric 3D system. SolidWorks was totally beyond my reach so I stuck with TCAD - until I heard about
Fusion 360. It was free, so I downloaded and installed it.
I found the tutorials rather difficult, and the extremely poor documentation made progress very difficult. I searched YouTube and discovered some videos by John Saunders of NYC CNC, under the name of
Fusion Friday. The first one is at
https://tinyurl.com/y6yrna8q
I followed these videos until the emphasis veered towards CNC, when I then found another good series called
LarsLive at
https://tinyurl.com/y3hfb4b8
I learnt a lot from these, and then found yet another source of "learning" at a very unlikely location called the
Autodesk Community of the Philippines at
https://tinyurl.com/y94vcjog
Its not a series of tutorials, instead its a series of monthly challenges.
If you register with them they will send you a Fusion 360 challenge every month. Each challenge introduces one or two new concepts in a bite sized mini project, and, if you successfully complete a given number of challenges you get a Fusion 360 diploma.
You don't have to register. I didn't. What is really good is that the solution of each challenge is supplied as a YouTube video in the following month, and the instructor very carefully explains every detail. I didn't register so I just look on YouTube to watch the latest solution. Its a really good way of learning.
Learning F360 is not easy. Even after about 20 years of TCAD, in which I became very proficient, I found F360 a really steep learning curve. Now, after persevering, I find I can use F360 pretty well - especially for creating STLs for 3D printing.
I admit that, although F360 can produce 2D drawings automatically from the 3D models, the facilities are very prescribed and leave a lot to be desired. TCAD is far better at 2D drawing than F360. (I still use TCAD for simple 2D drawings.) But F360 can do super 3D modelling with multiple components that can be animated to see how they move. It can do collision detection, stress analysis, and generate CNC code, as well as producing photo quality rendering. It can also do something that I've never seen in a CAD program: sculpting, where you can manipulate a 3D object as if it was a lump of clay.
The 2D sketches used for creating and extending 3D models are very powerful and fully parametric, but currently the 2D drawing system used for producing working drawings is not that good. (I'm told that improvements are in the pipeline). Once you've mastered the facilities of a fully parametric system you will never want to give it up.
I've recently had a look at the Paul McWhorter videos, but have to admit that I didn't like them. In my opinion he often demonstrates rather poor methods - but your mileage may vary.