I drain mine by letting them sit overnight and then put the drain plug, filter, and new oil back in the next morning. Longer drain time allows more of the dirty oil to get out.
Get my oil from a bulk distributor by the case as it's much cheaper than buying individual bottles from the parts stores now.
Bingo. Long drain time is the key IMO. Overnight and then back level too and more comes out. Jack back up and here comes some more oil. Then I run a half quart of clean oil through to wash bottom of pan. Cheap insurance.
The rest depends on what car, as already mentioned. My '89 Diplomat has no belly pan so I roll a single floor jack up front to and am able to hit a center piece of the K frame, jack it up, and put a jack stand on each side and still have plenty of room to move around. I have a remote filter right up front with steel braided lines that then go to the engine oil cooler.
My Charger is much different. Belly pan, much lower to ground, different jack points.
