Hi, I'm starting a master thesis and am very new to STATA with very little experience. I am looking at innovation in various technologies over time with regional data.

I have a data-set of regions (i) and their technologies (c) over 5 time periods (t). As a result, each region (i) has a number of technologies (c) and also data on each-year. How can I start using panel-data on STATA by telling to take into account this structure?

Thanks!