Should I get information from outside the app for some lessons?

Question

I left Sololearn for like a month, because I was getting confused with Java course and the C++ dinamic allocation of memory. I search through the Google Play programming apps looking for the best one, but anyone was satisfying like Sololearn. I really don't understand these lessons... Can someone satisfy my doubts?

Answer 1

dynamic allocation is nothing but using' new' keyword, it means allocating memory to data structures at run time not at compile time, helps a lot for running programs on large arrays or any other data structures
refer some good books, or video tutorials, u won't get detail answer of dynamic allocation here

Answer 2

For C++, try:
www.cplusplus.com/doc/tutorial/dynamic.
For a better insight into dynamic memory.