This is a great way to get around London. I suggest finding a tube map available on line and choice your hotel from a nearby location. I booked my hotel first then had to use hotel shuttles and taxis to get to the tube (subway) Most people are friendly although they do not like you in their space during rush hour. The cars were very full and many people were standing. If you go after 9am and not during 4 - 7 you should be okay. Victoria station is huge! Do a little planning ahead of time and you should not have any problems. You really do need a tube schedule, a bus schedule and availibility of taxi or hotel shuttles to plan your trip.