Glad for you...Always best to do your own work if possible. Just going to mention fluids and filter in this post. Just bolts mostly...When we got our 2003 ex rental, every fluid and filter got drained and changed. That way you know the condition and how many miles on the fluid to start your own maint program. (If interested in other normal wear and tear parts that I replaced, PM me.)
What else you might need to know. First time under your rig...Lots heavier than your car. Make sure jacks or ramps or whatever you are using can support it can stand the weight.
Find out the torque spec's on the bolts you take out, so you can put them back without ant leaks or broken bolts.
If you don't know what trans you have but find tourque spec's here.
https://www.globaltransmissionparts.com/ford-transmission-parts/I always use my fingers to put trans pan back on till until they get so tight I can't. On my 03 the bolts are steel and body of trans is alum, so did't want any chance of cross threading. (Maybe your is different?)
When waiting for stuff to drain I always look around doing my own little inspection. Looking for loose bolts or other fluids leaking etc.
Those Triton motors prefer an oil filter with a "silicone" valve built into them. The valve prevents oil from leaking down when motor off so every time you start it, is a "dry" start. Ford OEM is what I buy.
If you don't have torque wrench, do your home work. You don't have to give your first born but at same time my cheap harbor freight I bought was only off by about 50%. Ended up buying the old style "beam" bar torque wrench.
Another filter is the fuel filter, you might have to buy little plastic disk looking things ($10-$15.00) to dis-connect the filter.
Be aware...I poured some "sea foam" into mine to clean it out. It cleaned out tank so good that some debris on the bottom of tank broke free and plugged up fuel filter and the filter went obviously into "by pass" mode and then some debris plugged up injectors. Not a big job to fix, but sure took a lot of time. Price for new injectors was around $80.00 each if I remember right. I ended up picking metal shavings from them clean up with a magnifying glass under a good light. I believe they came the generator fuel line that motorhome maker drills to install, not entirely sure.
Cooling system. Drain plug on radiator, was told they break easy and plastic with rubber washer. So I left it place and sucked out the fluid with cheap $5.00 hand transfer pump, to drain and replace cooling fluid.
🙂 Hint...I now carry mechanic hand soap/cleaner in a plastic bag inside a coffee can. The plastic bottle broke and was a mess to clean up, riding inside compartment.:)
2003 Majestic 23P... Northwest travel machine
2013 Arctic Fox 25W... Wife "doll house" for longer snowbird trips
2001 "The Mighty Dodge"... tow vehicle for "doll house"