now that I got that out of my system I'll answer you Question. the only friends in that game are on what I think is called a palpad. I could be wrong about the name, but otherwise yeah. you get them by battling them in the multiplayer place. in case you haven't piced it up yet, the "friends" are other peoples characters.
FYI to answer #1, the fan clubs in the Hoen region games
Not true. Fire red has a fanclub.
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In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
To get Pokemon firered on PC download a vba and Pokemon firered ROM
Yes there are shiny Pokemon in firered
You cannot get it in Pokemon FireRed. It doesn't matter because it is not necessary in Pokemon FireRed.
It is not possible to get a ninth badge in Pokemon FireRed. You can only get eight badges in Pokemon FireRed.