To play, deal out the cards, build a word with two cards (a consonant and a vowel, e.g. ch + ew to make "chew"), then take turns creating a new word by putting a new card on top of one of the existing cards (e.g. put "n" on top of "ch" to make "new").
The winner is the person who gets rid of all their cards first, or whoever has the fewest cards once nobody can make any more words.
The game includes an instructions page, if anything in this video is not clear