The coins: top row: pence, two pence, five pence, 10 pence, 20 pence
bottom row: 50 pence, pound, two pounds.
The Pound is like our dollar. The pound is signified by what looks like a cursive capital L with a line through it. If there is any change it is signified by a lower case p. Pretty easy.
However, it is quite daunting trying to figure out which coin is which. First, the queen is on all the money. So, you cannot just look for the one with Lincoln. To an American the 5 pence looks like a dime and the pound is the about the size of a 10 pence.
To me, the pound as a coin makes it easy to spend. When you are letting go of a five pound note anything you get back is coin!
The notes, aka paper money, are different sizes and colors.
The money is really easy after a while. If you do not like to deal with the mess of carrying around lots of coins your credit and debit cards will work IF you contact your bank and credit card companies BEFORE you leave.
If you do not have a credit card or choose NOT to use it you can purchase a Cash Passport from any currency exchange vestibule in the airport.
Keep your reciepts. It is interesting to see where your money went.
Check for the VAT - value added tax. There is a lot about the VAT online so read it before you go to Europe. BTW a shop has to give you VAT paperwork.