Airtable: Extracting multiple related records from a single cell and iterating over them

Could someone direct me to a suitable tutorial?

I have a table with items named Industry.

For each Industry item, I have 20 related links to different items in another table called Vehicles(general) (so that's 20 vehicles items).

I then want to perform an operation on every data point from each Industry item and all of its 20 vehicles to create 10+ records in a new table called Vehicles(specific), which are linked to the Vehicles(general) that are linked to the specific industry.

So, in the end, for example, if I have 10 different industries, this would result in (10x20 Vehicles General) which then leads to (10x20x10+) Vehicles(specific), all linked to their respective parent elements.

Can someone point me to a relevant tutorial? (Please avoid generic, out-of-context tutorials about arrays or iterators).

Thank you!

Here is the closest explanation I found for this challenge: Feeding multiple linked records via Integromat - Airtable Community

I've managed to retrieve a couple of items, but now when watching records from the Vehicles(general) table, how do I get the corresponding industries and match them?