Hi.  I am new to rom hacking and want to make my own fighting game.

I have 2 roms.  one is NES and two is GB

1.  Street  Fighter 2:  The Horld Harrior (YOKO soft)

2.  Soul Falchion  (some company from ROC)

I pretty much just want to change the graphics, menu's, text, & music.  I have a tile editor (FaTILEty) and I have zero idea how to use it.  Can anybody help me?  I just need to know the basics of editing the graphics and inserting custom music.