There is not much to say about the letter X.
Not many words start with an x, the letter is more commonly used in mathemetical calculations and it gives you quite good points with scrabble if you go beyond the 3 letter word!
In recent year, Xmas has become a popular way of writing about Christmas. The X stands for the Greek letter Chi or Christ, hence the abbreviation. But apart from that, not much happens around this letter.
So I will leave it with that and work towards the last 2 letters of the alphabeth. Nearly the end of the year and nearly the end of the alphabeth. 🙂