Obviously you shouldn’t undertake this one without the proper equipment to safely jack and keep a vehicle raised. It’s a little more technical than the rest, but still very workable. First off, buy the correct oil as advised by the manual/engine code, have a drain pan or large builder’s bucket to catch the old oil, and get a can of engine flush and a new oil filter too.
You’ll need to know how much oil your engine takes, where the sump and sump bolt are, and also follow the instructions on the can of engine flush. Loosen the sump bolt and catch the old oil and engine flush, tighten her back up, add the new oil and make sure to check the dipstick after it’s settled to ensure you haven’t over or under filled.
Once you are happy, take her for a spin for a mile or two to get the engine lubed up once again. You should be getting an oil change at around 3-5K miles or as advised by your car owner’s manual.