im dead broke!

let see now..
i started this month with rm 400....
i use rm 112 to pay my phone bill...den da rest for everything else....
by 9/9 i got anoyher rm90...n now im totally broke!!!
i dont know where have all my money gone to....
i was suppose to use every thing until da end of this month but know i screwd it!!!

arghh....i'm in 2nd year n i dont know how to keep budgeting my money!!!!
help me!!