Just a quick question.

Try taking it to the dealership.

Make and model?

It's a Toyata Prius 2007

It's very simple. Yours takes the standard oil filter, (bottom front pass side) 5W-20 oil, and 3.9 quarts. Tools needed are 14mm wrench, drain bucket, and a oil filter wrench (highly recommended).
It will need a new drain plug gasket so no leaks will develop.
Nothing to it. Just like any 4 cylinder car.
To check oil level when done. Put in "Ready" mode, lightly step on the gas pedal in park, the engine will now run at higher revs. Do that for 10 seconds, shut off, and check for leaks.
My BIG question is why? Just take it to the dealer. You're not saving much and possibly creating headaches.

Most dealerships and oil change places have deals for $20. 4 quarts of oil and a filter bought at a store would run you $12+ so go to any oil place offering these prices, like Merlin's.