Where in Texas are you? If it's near austin I'll walk you through it.
Yes you can get everything at oreilly, but you'll also need a decent drain pan, and a toyota-specific oil filter housing cap tool, and a torque wrench. Our filter caps have wings on each side and the good tools have notches to interface with these, vs just the 14-sided tool. Get a good synthetic 0w-20, mobil 1 or pennzoil platinum, whichever is cheaper. People have their favorites but the consensus among people that know about this stuff is they are all VERY good these days, just get the name brand stuff that is cheapest. Avoid high-mileage oils, even if you have high miles.
I recommend OEM toyota filters. They are quite cheap, and the quality is guaranteed. Just go to the dealer and buy 4 or 5 to have sitting on the shelf for your subsequent changes. They come with new o-rings for the filter cap, and a tool to push in and drain the oil from the filter housing to avoid a mess when pulling the cover. Some people have reported seeing these at walmart.. or there's
amazon. But
amazon has issues with counterfeit parts and this is somewhere I'm not willing to take that risk.
Also get a handful of drain plug gaskets from the dealer. Very cheap, and need to be replaced every time.
You do need a torque wrench. The oil drain plug is 30ft-lb, the filter cap is 18, and the filter cap plug is 9. Many torque wrenches do not go this low, FYI. People that over-torque the filter cap often regret it. With the usual heat-cycling of daily use it will get stuck and break when you try to remove it later, as it's made of plastic. An aluminum part is available from toyota, but requires some easy mods to make it fit.
This is one of the better videos out there, with the one detail that it's an australian diesel so the oil filter is on the other side of the truck, so you'll need to pull the driver's side front skid plate, not the passenger side