Help me!

i want to add item to cash shop and to Mod but i dont know.
Can you help me?
thanks
sr my bad E

if i wish to change contents data.saf use what tool ?
(inserts in data.saf files which you have edited in advance, for example - Skill. SData, or etc)

big problem ??
add item to cash shop
add item to mod
i want server up online @@
help
sr i know English so so