Linked List, like arrays, is a linear structure of data. Unlike arrays, linked list elements are not stored in the contiguous location ; using pointers, the elements are linked.

Linked Lists are better because:

1) Dynamic size

2) Facility of insertion / deletion

To Insert something:

def push(self, new_data):

new = Node(new_data) 

new.next = self.head

self.head = new