
Travelling by train in the UK
STD = standard class; OUT = from the place where you are now to your destination; RTN = return (back to the place where you started your journey); OFF-PEAK DAY = cheaper version at certain times of the day, days of the week or via a particular route; SGL = single, one-way ticket; NIL = none
See enclosed pictures in the text below:

USEFUL videos
Breaking the language barrier: https://www.youtube.com/watch?v=xNmf-G81Irs
Learning multiple languages with modern technology: https://www.youtube.com/watch?v=bmILvfssfV0