Blitzle is the first electric type you will come across, so that is probably the best to start off with.
bianca vs electric gym leader
Its in Victory Road
You have to get the event Celebi on Pokemon Diamond, Pearl, Platinum, HeartGold, or SoulSilver, then use the Pokemon transfer in Pokemon BW to get in in BW. then you have to talk to somebody in Castelia City.
bwana
nope
He was on pokemon the movie black and white.You will see him,but he should be on pokemon BW rival destinies.
The new season will be called "Pokemon BW: Adventures in Unova"
Gengar, Staraptor and infernape are some pretty good pokemon you should try those, I know they are some of my favourites.
I'm guessing you mean Pokemon BW tour see Pokemon.com for details.
legendary pokemon.
Go to YouTube
You can not find the TM for shock wave in pokemon BW, but a pokemon can leared by a pokemon (Eg. Blitzle Lv.11).