There are Eight.
They are:
Zapdos
Moltres
Articuno
Entei
Suicune
Raikou
Mewtwo
Deoxys
Their are 7 HM's available in Firered.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
eight.
7.
what
None
There is no Pokemon convention in firered.
It evolves once in FireRed into Togetic
To get Pokemon firered on PC download a vba and Pokemon firered ROM
Yes there are shiny Pokemon in firered
12.
i masterball