I like the features of using methods in modules so I can easily make it where instead of using long lines of code like this
$game_variables[5] += $points
I can shorten it up using this
Gv.addval(5, $points)
I made a module and added methods in it so it shortens up code to make it not so long.
EDIT:
And I do it for other things. Use this
module A
def self.ls(id, iid)
$game_actors[id].learn_skill(iid)
end
end
Then use A.ls(actor_id, skill_id)
what this does is instead of using
$game_actors[actor id].learn_skill(skill id)
you can use this instead
A.ls(actor id, skill id)