Just place parser php scripts in web root and use like http://127.0.0.1/ and click on needed script.
For smart boys: you can just do bat file to execute every parser php file and do automatic bulding/patching/packing
It has own pros and cons. If you want flexability, customizable compiling/scripting, maps (if you have those), then php is way to go. For other cases C++, it's more compact and easier to run
There is nothing really to teach, you just open xlsx files and learn what server consist of and what each value does. That way you will learn how to change/create items/npcs/monsters/quests fast
npc buying price is script price + 10%
npc selling price is (script price / 2 - 10%).
So if you want your booty to be sold for 45000 roughtly, set 100000 in script
Well you were talking about GM account, because you mentioned pInsert_Staff procedure. To login gm account you need add ! before login. As for normal account, you would need add BILLING entry of that account