So, when I drain the oil, I just grab the drain pan and then I'll take the bolt off to let the oil drain out into the drain pan. I'll let it fully drain out and then once it's mostly out, while it's still dripping like that little stream, I'll take the oil filter off and then I'll throw that out. I usually put it in the box that the new one comes in, but anyways, I take the new one and I spread some old oil on the little seal, screw that on, and then I go down below again. Well, depending on the car, some is above, some is below obviously, but then I will put the bolt back on to stop the oil from draining because there should be no oil and then after that I will add oil however much the car needs and I'll check the dipstick to make sure it's good and then after that I will let the car run for a second, make sure that's good. So that's my process for changing oil, or well, what I mean is after I turn the car off and check the oil again. But anyways, for checking fluids, it just depends on what it is. If there's a trans dipstick, I'll check the trans dipstick and then anything like washer fluid or brake fluid or anything like that, I just make sure it's in between the fill or the full and the add line and yeah, that's about all for changing oil and checking fluids.