After what it is worth starting to study stacks and heaps in C#???

Answer 1

If you know why you would need them, then why not right away... GL ;)

Answer 2

In c#, this is largely taken care of for you behind the scenes. It won't be very often that you code something where you have to think that deep about memory management but, understanding how this is implemented in c# is useful.

Answer 3

https://www.c-sharpcorner.com/article/stack-vs-heap-memory-c-sharp/