Well, I see I'm in the newb area. I don't know much about hex editing or making tables yet for translations, but here I am being asked to improve the tutorials. Are you sure you want me to be doing that? I came here for answers, because I have none myself.
Usual hex editing is not magic, or indeed an area of hacking any more than using a word processor is novel writing.
That said. Yes. Write a tutorial. Often the best person to explain it is the one that has just gone through it.
I could write one, indeed I have
http://www.romhacking.net/forum/index.php/topic,14708.0.html , but at the same time I am the kind of boring bastard that has spent the last... maybe 12 or 13 years in earnest and no small amount of time before that learning all this. As far as the matter of text encodings go I could probably do a rewrite of the whole major general song
https://www.youtube.com/watch?v=zSGWoXDFM64 but for text encodings if I wanted. Coming from that position I will almost inevitably skip things that might want to be covered in more depth or wander off on tangents, mainly as I have been accused of just that on many occasions.
"Youtube?"
The video tutorials discussion has been broached many times before, one of the more notable occasions
http://www.romhacking.net/forum/index.php?topic=21383.0 , but despite video being my hobby I am at a loss for how to make it in any way both compelling and useful.
As far as
"Bad formatting"
Enough to truly distract? I find 80 character per line text to be as charmingly antiquated as any but I do occasionally click through the pack and they can be handled.
not detailed or vague
Quite possible, the [introduction]*mumble mumble* [end stage interesting part] part of some was one of the reasons I took to writing the thing above.
out of date, referencing programs that are defunct by today's standards,
For whatever reason most doing hacking have had to drag themselves up by their own bootlaces. I can't rule out it being possible to learn in a more conventional manner but it is what it is.
At the same time pick essentially any game you like from any non PC system and it will be the very same as the day it left the factory, which can be closer to 4 decades than not at this point.
To that end while I can easily give you an out of date tutorial on how to use maybe a computer OS or something it is a harder claim to make for ROMs. Said programs might be defunct, or superseded, but their intended functionality was not. If you can grasp the principles then you will do well.
I did just that with
http://www.youtube.com/user/PhlearnLLC (a photoshop tutorials channel) but adapting it for GIMP as it was going along, and it did wonders for me. It is a good channel and makes some effort to explain what is going on but it does not directly carry.