This may sounds like a dumb question but I havent really got to grips with this oyster card business!
I just turned 19 and my current 16-18 expires at the end of this month so i will need an 18+ oyster student card. how much do i have to top up? also im in full time education so would it be free? thanks!
Source: http://answers.yahoo.com/question/index?qid%3D20100907051413AA5fSg1