I guarantee, in the end, you will know more than 95% of users who have been using Mac for years. All you need is to read this blog and open each link I have to other posts I wrote. I don’t want you to waste a year, so I assembled an absolute minimum you need to know to use Macs efficiently. It took me almost a year to learn basics.
With my next purchase, MacBook Air, I didn’t have enough space to install Windows, so I had to learn how to use macOS (Apple’s operating system). So, I installed Windows using Bootcamp and used it as a PC. When I bought my first Mac (it was Mac mini), I absolutely hated it.