Welcome to the addiction Rusted. There is a lot to learn. And it’s compounded some when it comes to the 47-55 Advance-Design trucks as they were so similar for 9 years. Especially 47-53: Hoods, fenders, grilles, doors, beds and lots of small parts. And lots of subtle changes year to year that only the experts will catch.
This spotters guide might help. Here
This website has tons of useful Chevrolet info. Here
Good luck with your trucks.

Professional Novice