Q is for Quince Tree, Chinese

• The letter Q is usually followed by the letter U, but there are some exceptions.  The majority of those words are loanwords from other languages.  
• Q is not used in the Czech language.
• Q is the only letter not used in the name of the United States.
• Q-Tips were invented by Leo Gerstenzang in the 1920s, after he attached wads of cotton to toothpicks.  The Q stands for quality.
• Q-Tip is one of Fuzzy One's nicknames.  
• Q is the second least commonly used letter in the English alphabet.
• Queen Ann's Lace and the Quaker Lady Iris are two flowers that start with Q.
• Q is worth 10 points in scrabble.
• The tail of the lowercase Q curves to the right, to differentiate it from the lowercase g, which has a tail that curves to the left.
• The Chinese use the letter Q to represent the "ch" sound in English, like in the word cheese.
• Two widely used legal words that start with Q are quorum and quota.
• The girl's name Quinn means "fifth born." 
• Mind your ps and qs, which means mind your manners.
• Quality and Quantity, queasy and quirky
• Queueing, the only word with five consecutive vowels.
• Quid pro quo - this for that.
• Quartzy, the highest scoring word in the game of  Scrabble
• There are five years in a Quinquennium
• The word "queue" is the only word in the English language that is still pronounced the same way when the last four letters are removed.
• IQ
• A "quidnunc" is a person who is eager to know the latest news and gossip.
• The typewriter was invented by Hungarian immigrant Qwert Yuiop, who left his "signature" on the keyboard.  (Not really, I'm just kidding!)