Im in my second year of CA course and finding study material very difficult. The books prescribed are very theoretical and lack practical examples. While studying incomes from other sources, i couldnt understand role of tally software in it.

I am an engineering student in India and am having difficulty understanding non linear data structures like trees and graphs. Can someone explain how to construct and traverse binary search tree and binary heap in simple terms? Also having trouble visualizing adjacency list representation of graphs.