Welcome to the club then,
I would suggest you to start with acis as the way it's working is more simple than frozen.
Npcs,Armors,Weaps can be added directly in your pack and not mess with sources.
Frozen using navicat for items and npcs too.
Generally remember:
Npcs:
custom_npc table in database for create new npc. Fill the column with your values Put your htmls in your pack/data/html and then depends what instance is your npc //spawn it
Items
custom_armor , custom_weapon , custom_etcitem in database about new items. you have to create their stats in your pack/data/stats/ what instance is the item
Both cases requires client edit like Itemname,weapongrp,etcitem,npcgrp etc