You'll want to make a function to insert a head for your linked list object.
In order to reverse a linked list, the easiest way (not saying the most efficient, just easiest for school projects/etc) in my opinion, is to iterate through the node and Copy the listnodes to a new linked list, but by using InsertHead for each listnode, you will be placing the node at the beginning of your new list in term reversing your list.