There's really not much to it. I typically put the van on ramps to get a little extra room under it. Shove an old hunk of ply wood under there. Position drain pan under and to the side of the drain plug. I like to have the van warm, but not super hot. I always wear nitrile gloves, as used oil is nasty. I think the drain plug is a 7/8" socket. But i can never remember so I bring a bunch down there with me. It's always none of them, and i have to go back to my tool box. Anyway, pull the plug, don't drop it in the drain pan while removing. Let it drain for a good 15 minutes. It will drip forever, but i usually let it drain while i'm getting my new filter ready and unboxing the oil. I usually put the drain plug back in and then crack the filter and let it drain into the pan. A good filter wrench, like one made by channel lock is a tool you will own forever. I recommend getting one. Removing the filter makes a bit of a mess, but it can all be contained in the pan. Spin filter off and try not to drop it in to the drain pan, thusly splashing hot oil all over face and forearms. I usually have the new filters cardboard box and a plastic bag ready to receive the old dirty filter.
Some like to prime the new filter, but i'm not sure its completely required. Depends on how slick and not clumsy I'm feeling. Sometimes i just dip my finger in the clean oil and lube the seal of the new filter and spin it on about as tight as i can get it by hand. Sometimes if i have half a litre of oil left over from one of my other vehicles (I put Kendall SHP diesel full syn 5w40 in my '78 firebird too) i'll use that oil to prime the new filter before i spin it on.
Next, I go topside and put the fresh oil in. I use a clean funnel for this, and with the Kendal product, it comes in 3.78L jugs so three of them does the job perfectly. But i always add the last half a jug slowly and check the level on the dipstick as I go. Just habit. Overfilling a modern engine is bad news for the emissions equipment. So don't do it. Before I remove the drain pan and plywood from under the vehicle, I go back underneath and give the pan a wipe and a good visual inspection of the seal to the block to identify any leaks. Mines leaking, BTW.
Lastly, get all your tools and stuff out from under the truck, and back it down off the ramps. Put your used dirty oil into the empty containers with a funnel on the plywood and dispose of it according to your local laws. I usually toss the filter into the box of oil when i take it to the dumps household hazardous waste depot. I believe it gets recycled into cheap quick lube oil. Or not, could be wrong.
Last step, take a selfie trying to look cool and masculine and post it to social media exclaiming you are a real man. Having a ridiculous beard is required for this step.
*this step is optional and I personally don't do it.