1 Linked Lists: the Basics
2 Coding for Linked Lists
 2.1 Traversing a Linked List
 2.2 Searching a Linked List
 2.3 Adding to a Linked List
 2.4 Removing from a Linked List
 2.5 Copying and Clean-up
3 Variations: Headers with First and Last
4 Variations: Doubly-Linked Lists
 4.1 Doubliy-Linked List Algorithms