No problem. Any NES walkthrough will get you through, but I wholly recommend 2 Fighters, 1 Red Mage, and 1 Black Mage. It is very balanced.
And I just completed 1 & 2 on Steam myself. Those versions use the GBA and PSP as a base and switch out to the old magic system of the NES. In a lot of ways, mine is a bit more of an authentic remake from 1987. :)
Let me know what you think.