Vermilion will keep you busy for awhile with all of the running
around you must do. The top-left house contains the Old Rod which
will enable you to catch Magikarp. Going down, you'll find 2 houses
to the left. The 1st has a man willing to trade a Farfetch'd for a
Spearow*. The 2nd has a talkative man who in the end gives you a
voucher far a free bike from Cerulean! Go get the bike and then
travel back in style. Next, head south to the docks where the S.S.
Anne is having a party. Make sure you have the ticket Bill gave you
and be ready to hob-nob with the best trainers in the world (in
their own mind).
Get the Thunderbadge from
Lt. Surge in Vermilion City.