Doesn't Microchip already have a tutorial:
https://www.electro-tech-online.com/custompdfs/2012/02/33023a.pdf ?
It may be a little lengthy, but if you are going to cover everything, it will need to be. That plus the datasheet, MPLab, and MPASM make for a lot of paper.
One thing I wish were available are printed copies of datasheets. I have an older copy of the 12C5xx datasheet in a bound, soft-cover edition. I find it so much easier to read than printouts from my PC.
More to the point, and as another newbie, I think the flaw in trying to write a tutorial on datasheets is in defining the intent of the user sufficiently well to limit the complexity needed. Some people will be only interested in the switching functions, like I was for the 12F509 for several years. Others will want to get into analog functions or will want to use a chip with lots of analog functions only for digital, and so forth.
@JimB
I thought I was the only one who complained that you needed a dictionary for misspelled words, not correctly spelled ones. Spelling was my worst subject by far. There are words I never learned how to spell, like "subtract." Left to my own, I usually put an extra "s" in it to rhyme with "abstract. I even screw up spelling for assembly instructions by reversing letters.
John