In a little over a month I'll be in London for the first time, just for a few days. I've been reading up on transportation around the city and how it works, and it's a little confusing to say the least. I'll get it soon, though, but do you recommend any websites that would explain transport around London in fairly simple terms? Or should I just keep on reading the maps and start memorizing?
Also, I arrive at Heathrow and my hotel is in Croydon. What is the simplest and cheapest way to get there?