dont worry i was stuck the first time i watched it.
just keep watching it and you'll pick it up.
the basics:: there are 25 contestants who are the people on the sides - they stay there till they get there go so some people have been there for 10/20 shows!! sometimes even as many as 50!
at the beginning of the show the computer randomly selects one of the 25(i think) contestants for it to be their turn, that person go to the table in between the 2 sides - the east & west wings as they call them. they go with their box.
each of the 25 contestants are randomly given a box with different sums of money in, ranging between 1p - �250,000
basically the contestant who is at the table has to pick boxes and hope that they are blue numbers- between 1p and �750 (i think). they pick 5 boxes per round, then the banker phones and gives them an offer. so the banker will phone up and lets say offer �1,000 to leave the game then and not play on. the more blues you knock out by picking the boxes the higher the offer.
you can either take the offer or play on, and play right to the end and get the amount of money in your box.
the banker is just an unknown person.
hope this helps you. you're really best jsut watching it a couple of times and picking it up, i really didnt get it but months down the line and now im loving it!
hope you manage to pick it up and are gripped too!
:-)