The user needs YouTube video tutorials on drawing and projection of conic curves in Engineering Graphics to help them prepare for their diploma exam. Here are some YouTube video tutorials that may help: 1. "Conic Curves - Engineering Graphics" by LearnEngineering 2. "Engineering Graphics - Conic Sections" by NPTEL 3. "How to Draw Conic Curves" by Engineering Graphics Tutorials 4. "Conic Curves - Projection and Drawing" by Graphics Academy 5. "Engineering Graphics - Conic Curves Tutorial" by Diploma Engineering Please search these titles on YouTube to access the tutorials.