Without using cheats?
Well then you should challenge the gym leaders and defeat them the old fashioned way: Battling.
no.
you us a rod at the waters edge
when you find that Pokemon if you have a master ball with you use a pokeball and you will capture it
no you can only trade using a game boy to a game boy with the link cable.
You have to upload it from FireRed, LeafGreen, Ruby, Sapphire, or Emerald.
== ==
You can't
short answer: no
No silver is not compatible with firered.
By using the directional-pad on your system of choice
Evolve the Eevee you get given at the top (using the back entrance) of the Pokemon 'Mansion' in Celadon using a Thunderstone.
The only legitimate way to obtain Celebi and Mew is through a Nintendo event. In FireRed and LeafGreen you will need an event-only item to travel to the last two islands where you can catch those Pokemon