Get more help for pronouncing words with letter X in this lesson: how-to-pronounce-words-with-letter-x-in-american-english.html

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One difference between British English and American English is the use of the /j/ "y" sound in words like new, due, and tune.  In American English, these words only have the vowel /u/ "oo" sound:  "noo, doo, toon," and in British and other dialects of English they have the glide /j/ before the /u/: "nyou, dyou, tyoun."

In American English, we use the /u/ vowel in some words by itself, and in other words, we use a glide together with the /u/ vowel (/ju/).  Here are some of the most common words, sorted by which sounds they use.

/u/ ("oo")
do, due, new, knew, school, food,
room, soon, move, true, blue, moon,
too, two, into, noon

/ju/ ("you")
you, use, view, unit, music
beautiful, menu, value, useful, users
university, youth, communication,
continue, review, human, computer,
cute, argue, amuse