1) pull off the lower fairing
2) on the shifter/clutch side on the bottem of the engine there will be a downspout with a bolt stuck up into the bottem of it. This is where you drain the oil Remember to replace the bolt!!!! about 15ft/lbs of torue (manual will be specific)
3) oilpan underneath, remove the bolt, don't drop it in the oilpan
4) In the front of the engine behind the downpipes will be a black cylinder 2-3 inches in diameter (your manual will show it better) this is your filter
5) remove the filter and spill some oil on your downpipes, wipe this off
6) replace the filter with the new one that you already bought, most moto-stores should carry the one you need. Remember to run a little oil around the o-ring to ensure a proper seal. I twisted it on hand tight +1/4 turn more
7) somewhere along the right hand side of the engine will be a drain cap, this is where you add the new oil (will be labelled in the manual) add your oil here, the manual will tell you how much it will take.
check your site, or dipstick to make sure it has enough (after replacing the cap)9) turn it over then stop it, check oil levels again (add more if required)
10) check for leaks
Pretty simple, this is all based off my bike, which should have essentially the same engine. Take a scout around and see what you see.
It is not complex or difficult to do. Really, the worst thing that can happen is you don't add enough oil, or you don't tighten it tight enough and it leaks. You're checking for both before you do any riding, so it won't hurt the engine, because the engine won't have time to dry out.
