Ok, from what I remember a few years ago, Misty was the Gym Leader in Cerulean City. She was considered the black sheep of the 4 sisters that ran the gym, so she left and decided to follow Ash. Albeit she treated him like crap, they eventually liked each other.
Togepi is supposed to have a lot of powers, including a Metronome and a Psychic Attack.
After Brock left the group to work as the maid or whatever at that female Pokémon doctor's labs, Ash and Misty ran into Tracy, a Pokémon drawer. They met almost like they met that kid who took pictures of Pokémon. This time Tracy was a replacement for Brock, and subsequently stayed on the show for about a season or two.
Then I got bored with Pokémon. I still have my Pokémon cards, the first 1-151, and then half of the 152-251 cards, this latter half being in all Japanese, and the aforementioned half being a mix of English and Japanese.