how do I change the oil on my 2010 Avenger? any advice is welcome?

 

Since I don't have one can't give specifics there's a drain plug in oil pan remove that and drain the oil , remove filter with proper wrench , wipe off surface , put small amount of oil on gasket surface reinstall and tighten to specs. Replace drain plug and refill consult manual for oil specs (likely 5 quarts)

Or take it to quick lube place and watch what they do then you can do it the next time