This is for play + prototyping.
It is not too formal.
Starting Point: How does this work?
A “Grid”
very basic & rarely going to be useful
text and numbers (no formulas, no imagery)
A “Table”
has “column types”
can be queried like a DB (also charted, filtered, stats calculated, etc)
calculations & formulas apply to the whole column (not custom cell by cell like Excel)
Tables for “Tasks”: