I've just bought an Oyster card for the occasional single tube trips I
make, and have read the official LT guide to Oysters, but it's full of
unnecessary pictures, and very short on facts. The TFL website has an
FAQ section which fails to answer most of my questions

(like how can I access on-line a record of my recent journeys, what if
I touch in at a Zone 1 station when my Oystercard has only a couple of
pounds of credit left, but travel to a zone where the fare would have
been more than that - can I top up at the destination or not).

Are there any unofficial sites which explain all the gory details of
Oyster cards? I've seen lots of threads on this newsgroup on Oyster
cards, many with useful information, but wonder if anyone has already
collected them into a compendium?

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