[Tyrolit]

1:

local Your_Frame = CreateFrame("Frame")
Your_Frame:RegisterEvent("CHAT_MSG_WHISPER")
Your_Frame:SetScript("OnEvent", function(self, event, msg, author)
    if msg == "string your looking for"  then
        -- your code here
    end
end

2:

SendChatMessage(messageString, "WHISPER", Language, recipient)

3: not sure this time of night what you mean here but to make a table as an array ( use for k,v in ipairs(table) to iterate thro )

table = {"first", "second", "third",..}

or ( use for k,v in pairs(table) )

table = { tyrolit = "Warlock", thoraxe = "Hunter", kaieldriale = "Priest", daednumai = "rogue"}