How to understand Rad Studio, where to get lessons/tutorials/courses?

Question

Delphi

On the duty of the new work, he met head-on with RAD studio 10.2. The task is "to write software that will communicate with MongoDB and support CRUD operations and fasten various selections."
I decided to take on C++Builder because I developed programs in C++ and C for reality quests. I came across
the fact that I don’t understand the samples presented by the studio at all: constructions, objects, etc.
I tried to find literature, but even on Amazon I did not find anything older than 2010. Crawling on Google, one gets the impression that many people hate RAD, and those who have it to cook are silent.
Comrades , do not let die of information hunger! How can I study at RAD?
It is possible that without a solid understanding of OOP or Delphi I cannot figure it out.

Answer 1

Ask on some delphimaster.ru or forum.vingrad.ru. Before, the dudes who did this used to hang out there.