You can opt for a different brand if you prefer (or if the Honda brand is expensive or hard to come by), but just make sure you always go for 10W-30 motorcycle oil.
When you refill your engine, it’ll take exactly 2.6 quarts of oil—you’ll have a little bit left over, so just seal it up and save it for next time!
Other necessary supplies? Honda Shadow VT750 oil filter—you’ll want to change the filter every time you do an oil change. As for tools, you’ll need a 3/8th ratchet, a 17mm wrench, a 65mm oil filter wrench, and a torque wrench.