inserting tiles is entirely the same i think and every other too jsut that in ruby there are different offsets and less tutorials than for fire red
but after LoA i am going to make an emerald hack
to tell you the truth, you shouldn't care about which tiles are overused, it only matters whether you like them or not, you can't use tiles you don't like and if you use some that you like, but are overused, who cares, just saying.
those tiles are VERY overused, not in pc, but in whack a hack, i have seen so many maps with those tiles, but ok, they are very good i like em. try to find a good grass tile, and mountain too.