You will need to put 2 pokemon in the Four Island daycare but not only that but they must be opposite genders and they need to belong in each other's egg groups if none of this is done then you cannot have eggs. However the simplest way to get eggs is to have the 2nd pokemon be Ditto because it can transform into the other pokemon and it will always be the opposite gender so it always works.
Yes.
ALL POKEMON except legendaries and pre evolved forms.
You can breed all Pokemon except: Legendaries, Babies and Eggs.
All except baby Pokemon and legendaries the exception being manaphy.
First, you get a female Pokemon and then you get a male Pokemon (same kind) and then you put it in the Pokemon daycare and then you wait a while
Only bring Pokemon of the same gender into the daycare. You can also refuse to take the Pokemon egg.
Take them to Four Island after beating the Elite 4. You leave your Pokemon with a Ditto in the daycare and they'll have an egg eventually.
To get bad eggs on Pokemon Fire Red you either have to cheat, corrupt data, or manipulate the game.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
There is no Pokemon convention in firered.
To get Pokemon firered on PC download a vba and Pokemon firered ROM
Yes there are shiny Pokemon in firered