What is the most logical next event?

How to create a relational data model
Don't worry about tables just yet.
It's obvious that you're building a database, and databases (relational ones anyway) are primarily made up of tables, which are made up of rows and columns (tuples and attributes if you're really into it).
Worry about entity relationships.
Your first goal is to map out the relationships that different business objects have. This is the " logical modeling " portion.