In need of tips and advice for software analysis.

Hi r/softwaredevelopment,

I am currently working on a project for school which requires a analysis for the software I need to write. This includes Use Cases, ERD, Sequence Diagram, Class Diagram, …

My question here is, what is the correct flow? The way to go about software analysis. I am a bit overwhelmed by all this analysis and don't really know where to begin.

Thank you in advance guys.