Where can I find documentation on newer Xcode versions?

Did you Google for Xcode 12 tutorial ?
There are a lot of material there.
For instance : https ://learnappmaking. com/xcode-tutorial/

If that's OK, don't forget to close the thread by marking the correct answer.
Otherwise, don't hesitate to ask specific point on the forum.

Good luck.

Yep. Unlike other areas of life, like building construction for example, computer programming changes both the products and the tools constantly. If we were to take a person from the Bronze Age and bring them to a modern construction site, they would have no problem figuring out how to use a hammer even though the products built in construction have evolved enormously over the past several centuries. Bring someone that learned how to use HTML in 1990 to Swift Code today, on the other hand, and they'd be completely lost. There are no absolute standards to work with in this virtual world. Everything can be adapted to the individual, and there are 7.5 Billion individuals in the world each trying to adapt the world to their own view.

Basically, we just have to find the most up to date stuff and fill in the gaps with our imagination. If you're trying to make new things, you should be good at using your imagination anyway.

Interesting historical perspective (but note that with evolution as in bronze age, your iPhone with the 70's technology, would probably weight million tons…).

But, the question is: did the answer proposed solve your question ?

Claude31, the example you pointed to was exactly what I had failed to find - something that covers the important points well enough for me to figure out the differences, but doesn't require two days of watching videos to get the information.