Catching Pikachu as a Starter
Apart from catching Bulbasaur, Charmander or Squirtle, it is actually possible to get Pikachu as your starter Pokémon.
Choosing Eevee Evolution
Eevee is a special Pokémon as the evolution is a random of one of three Pokémon. There is a trick to choose your evolution.
Tips for Throwing Pokeballs
There is an easier way to throw Pokeballs which can significantly increase your accuracy especially when you are aiming at those distant Zubats.