FF3 part 1: The Begining
The first part of the game is fairly straight forward, you go into town and destroy the troops, the game starts to change when you enter the cave. as soon as you enter, go up and then you should see a save point. Save the game then walk around for a little while and get some exp. You should fight the boss when you are around level 6
Boss Fight: Snail
Pay attension to what Vicks and Wedge say, it will help you a lot. with Terra, use the tech missle, and with Vicks and Wedge ues bolt beam. After a few rounds, the slug will bury its head in its shell, at this time, have all of your charactors use heal force. As soon as he takes his head out, continue attacking.
After the fight, go up to see the esper. when you talk to it, it will kill vicks and wedge, Terra gets knocked unconscience.
When you awake, you will be in some old guys house, take the elixir out of his clock before you leave. once you get into the mountain, keep going until around the save point. At this point, start fighting until you get to at least level nine. continue up and get the treasure chests, you meet up with some narshe guards, then you will fall down a hole, this is where you meet Locke.
Boss Fight: Martial
As soon as the moogles join you, change to the group with Mog as the leader, un-equip his weapon and shield (you will later give it to Edgar, a new Charactor). then send the other all-moogle team out to fight, after the enemies weaken them, send out the team with Mog. With this team you should be able to finish of all of the walking creatures. Then send Locke's team out to fight the martial. With the Moogles, kill the two lobos, with Loke steal from Martial, then attack him. This is an easy Battle.
After the fight, Locke will take Terra to near the enterance of narshe, go into the help place, you will find some usefull items in there. after that, leave narshe.