AI Mastery for Content Creation

I'm looking for a comprehensive guide on using AI tools for various tasks. I need you to teach me how do I do these tasks myself
Key areas of interest:
- Translating Excel sheets
- Creating videos
- Generating voiceovers
- Webinar creation

I'd like to learn how to leverage AI for these tasks efficiently.

Ideal skills and experience:
- Proficiency in multiple AI tools (especially OpenAI)
- Experience in content creation
- Patience and ability to teach beginners

Looking for a step-by-step learning experience.