How exactly does the student 18+ photo oyster card work?

Question: How exactly does the student 18+ photo oyster card work!?

I don't quite understand if you have to put money on it for tube travel but u get 30% discount from normal adult single tube fares or u use it to buy cheaper tickets!? Www@QuestionHome@Com

Best Answer - Chosen by Asker:

You go to a shop to top it up - like you would for your mobile - then as you put it on the Oyster pad on the bus, it debits the amount from there - & if it reads that you're 18+, it will discount the fare automatically!. Make a note of how much is on the card before you leave the shop!. If you're still unsure, go to a newsagent when you get off & see how much you have left on it!. Www@QuestionHome@Com

Is it anything like the mechanic 66- sketch chicken pad!? (!?)Www@QuestionHome@Com