I'm new to programming and web development, but just out of curiosity, if I wanted to write a script that fetches data and writes/generates product descriptions

I'm new to programming and web development, but just out of curiosity, if I wanted to write a script that fetches data and writes/generates product descriptions, is there an online resource that explains how to do this in general terms? Also, would writing it be something a beginner/novice like myself could do or does it require pretty advanced skills? Thanks for any info you can provide.