How to change your oil

Take oil cap off

Take the oil plug off to drain oil (a wrench would be the right tool for the job)

Take oil filter off

Put the new oil filter on

Screw the oil plug back on

Now pour the oil.. (It would be smart to use a funnel of some sort)

Check your oil gauge the needle should be in the middle of the gauge

Then check your oil to see if you poured enough oil