I have decided it’s high time I mastered the tube. I would really like to see a bit more of London; for the last few weeks I’ve just been milling around the south east of the city, which, apart from places like Greenwich, is starting to feel somewhat drab. What I need, I decided last night, is a few more adventures. Of course, I’ve been on the DLR before, but only once, and I have used the tube on occasion with the help of a PA, but it seems to me that if I could get to grips with the London underground system, the entire city could be my oyster. I know it won’t be that simple, as not all the stations are accessible and there’s a lot that can go wrong, but I really would like to try it. Now the big question is, where should ii go first? Any suggestions?