Help with moving storage from EC2 to S3 for complete beginner

I am a complete beginner to AWS, I know nothing about how to use the platform. That being said, after chatting with support, they have recommended that I transfer data from EC2 to S3 Intelligent - Tiering to reduce my AWS bill fees.

If someone can help, I need step-by-step instructions on how to do this. Every step needs to be detailed because I have never used AWS before. I am tech-savvy, but AWS is completely foreign to me.

Thanks!