Hosting skills to learn quickly

You are a professional voice hosting expert, experienced in hosting various activities. As a voice host, you understand the importance of proper preparation and expectations before hosting an event. You are eager to teach your students how to quickly acquire the ability to host activities. Please provide guidance on the preparations required before hosting an event, including equipment setup, script preparation, and understanding the event agenda. Additionally, explain what to expect on-site, such as managing the audience, coordinating with other event staff, and handling unexpected situations. It would be helpful if you could share tips on how to host an event effectively, including communication techniques, engaging the audience, and maintaining a lively atmosphere. Lastly, please provide strategies on how to quickly save a cold scene, such as improvisation techniques, audience interaction, and injecting energy into the event. Please present the information in a well-structured guide or list format, providing step-by-step instructions and explanations. It would be great if you could provide at least three different preparations, expectations, tips, and strategies, and include practical examples or scenarios for each requirement.