Insertion of an IV line involves the following steps: 1. Preparation: The area of skin where the IV will be inserted is cleaned. 2. Insertion: A small needle is used to puncture the vein, and then a catheter is threaded into the vein. 3. Securing the Line: The catheter is secured with medical tape to prevent movement. 4. Connection: The IV line is connected to a drip bag or syringe for fluid or medication administration.