No need to apologize for being a noob. there is a ton of info here and it can be hard to separate the food stuff from the bad stuff.
Many of us change oil and filter (use a Mahle one) every 3-5000 miles.
If you can get Mobil 1 v-twin at decent price it may be worth while as I hear it has the right amount of the"good stuff".
This is an excellent article and the author posts here as well.
Oils: What motor oil should I use? Which oil is best for my Porsche or aircooled engine?