London Anyone?

As many of you know, my sister and her family moved to London recently. While I was still working at RHR I was talking to a guest about it and she asked me what I was going to go visit my sister there. I have dreamed about visiting New York again and London would be fun but I always thought "I'm in school and I'm tight with money as it is" so I never seriously thought about it. I have thought a lot about London since that conversation at RHR and decided that I am going to London sometime in the next 2 years. I am still single and that would probably be the best time to go.

Well I don't know anything about London, well flying to London, cost, the best (or cheapest) time to go, and all that jazz. So if you have any tips to give me from your experiences or some traveling suggestions, even if its about places I should visit there, PLEASE share! My mentality has changed a bit I guess. I just remember when a dear friend told me, "its not about how much you have but what you can do with what you have."