New to flow getting data to run on our analysis tool

If one wanted to get flow data like for our analysis platform what is the best way to start on that? Where would we find documentation. I see a variety of different sites like intangible markets and cryptoslam pulls the data.
Thanks so much for any guidance

@BrettM I would recommend checking out the cadence docs so you can learn about how cadence works and how to use scripts to query data from smart contracts: Introduction to Cadence - Flow Documentation
Then you can use the js-sdk: Flow JavaScript SDK - Flow Documentation
or the go-sdk: Flow GO SDK - Flow Documentation
to run those scripts or events from your application.