you don't need to just beat team rocket at the radio tower and save the director and he will move away
you can leave them in storage or in the daycare
Beat the 5th gymleader and leave the gym
No, it's good. Your pokemon level up although they can't evolve.
leave the room and re enter it
By battling other pokemon, use rare candy, or by putting the in the day care for a while.(note: if you leave a pokemon in the daycare for a while they may forget some moves you taught them)
first make your pokemon about to leave to the pokewalker. Then hold the pokewalker about thumbs length away and it should transfer
To stop the evolution without using an ever-stone press ''b'' during the evolution to startle the Pokemon and leave it in it's current status
use them to fight, walk with them, don't give them rare candys or leave them in your PC box.
candy rots when you leave it in a dark place
Any type of candy is good.
You can go to Mount Silver and fight him. He has a level 88 Pikachu, and other Pokemon in the 80's. If this is too hard, then train at Mount Silver because there are many strong Pokemon there and while you do that, leave two Pokemon's at the daycare centre for a while and they will level up.
just like they do in all games: you walk 1 step and your pokemons get 3 exp if you leave a female Pokemon with a male Pokemon they maybe get an egg