Getting around

When I travel, I usually have one worry: getting around. I like to know where I'm going. And I like to take public transportation. So it is with some trepidation that I head to London. I know the city has a great underground system. Still, I always worry I'm going to miss a stop or bungle a transfer. Speaking of transportation, one thing I'd like to do when I go to London is do a Fat Tires Bike Tour. It is supposed to give you a good overview of the city, according to Trip Advisor, one of my most trusted travel websites.