Quid is a slang term for the British pound (£). It’s like saying "buck" for a dollar in the U.S.
U.S. Equivalence: 1 quid = 1 British pound, which is roughly $1.30 USD.
Lb (Pound), Modern Term: "Lb" is short for pound, the basic unit of currency in the UK.
Lb Sterling, Mod ter: This is another way of saying "1 pound sterling," which is the official name of the currency. "Sterling" distinguishes the British pound from other currencies also called pounds.
U.S. Equiv: 1 British pound sterling ≈ $1.30 USD.
Farthing
Historical. A farthing was a coin used in Britain until circa 1960, worth 1/4 of a penny. It was the smallest denomination of currency in the old system. U.S. equv, 1 farthing = 1/4 of a penny, so it is worth almost nothing now. Today, it would have no direct equivalent and is no longer in circulation as far as I know.
Shilling
Historical. A shilling was used in Britain before decimalization (1970s?). There were 20 shillings in a pound.
U.S. Equiv: 1 shilling was ~10-12 pence. In today's money, it would be around £0.05, or about $0.06 USD.
Other countries use a version of the shilling.
Pence
Modern and historical term: "Pence" is the plural of "penny." Before decimalization, 250?? pence made up one pound. After ~1970s(?), 100 pence make up one pound. U.S. Equiv: 1 pence today is roughly equivalent to 1.30 cents USD.
Stone weight is an odd old imperial weight measurement. I think 1 stone is US 15lb or 20 lbs. Stupid.
All this is part of the reason we fought the British. Confusing bastards.