This is my very first guide so I do apologize if it sucks. But after talking with a few of my friends I have decided to put up a few useful hints that will save you time and money. I will update this list more with the time that I play

~First off I highly recommend that you hug the walls trying to find any secrets hidden within the levels
~Save before you enter another room or advance onto a further part of the story. (my reasoning: if you advance to a part of the game where you can not return to the previous room and you have not explored it thoroughly. You will have to replay the game to find any missed secrets)
~Only buy items that are ESSENTIAL to you surviving a fight (my resoning: The battle get progressively harder. So you will need all the HP/MP recovery type items that you can afford. And there is no sense using money on weapons and that you find in stores when there are USUALLY much better items in the wilderness that you can find for free)
~More to come as I play more of this amazing game