Welcome! I know you are gonna continue to love your new ride.
First, O-ring chain: the stock chain is basic chain, nothing special. The O-ring chain has rubber O-rings holding the lube in the rollers & keeping the dust & grime out. They last a LOT longer than a basic chain, and require much less maintenance & fuss. With a basic chain you need to clean & re-lube after most long rides, especially dusty ones, or thru water/mud.
Look for the Service Manual PDF links here on the forums, Get both the general manual and the supplement for later model bikes. The Owners Manual is available in PDF if you didn't get one with the bike. The Service manuals have a maintenance schedule, and instructions for doing all the basics yourself if you are handy with tools.
Second recommendation: follow the clutch cable down to the engine, and make sure the coil spring is properly positioned on the lever down there. Proper spring return of that rod makes a big difference in how shifting feels.