Mod making for 1.09

[Allo]

Here are some other changes I'd like to make to Diablo that I would like some assistance with (if anyone has any knowledge of the offsets and what to change):

Increasing gold stack size
Don't drop items if you die
Sharing of experience between all players (I believe there was a post about this a while ago on this forum)
Offset values for mana cost of spells
Offset values for spellbook display of mana cost of spells
F1-F4 hotkeys (to be used like the F5-F8 hotkeys)
If anyone can give ANY assistance (or even provide a link to some Diablo documentation) I would be extremely grateful.

Thanks in advance.