Can anyone explain me how the functions Next and In Pairs Mean?

pairs(table) returns next,table,nil.

in a for loop, you can use it to loop over each key,value in the given table.

Eg.

local Example = {
	"Hello";
	"World";
	"Bye!";
}

for _,Value in pairs(Example) do
	print(Value)
end

--[[
	this would print
	Hello
	World
	Bye!
]]