Welcome to the Forum!
Yes, Ruger does have it on their website, but unfortunately the folks who entered the data didn't use the actual records exactly. There are several errors. That said, we have a thing around here called the Red Eagle News Exchange (RENE) guide that has a pretty good factual referrence guide to the year of mfg. If you want to post the serial numbers, (or just part of them; example; 10-123XX) here, we can help. Lastly, you can call Ruger directly, ask for records, and ask the nice lady there, and she'll give you the month and year of shipment.
PS; you aren't a dummy, it's just not as easily found. Besides, you asked for help here and that proves you aren't a dummy!