I do still need to add in an in-game tutorial, but I updated the how to play section of the playtest description to explain more about the game:
HOW TO PLAY:
Form words by dragging letters in and out of the word box to score points!
Insert the held letters at the bottom of the game into the word box to add letters to the box.
Draw letters into the bottom right draw pile to discard them out of the word box. Click on the draw pile to draw a letter to your held letters!
You can also reorder letters in the word box to form words.
Use the hint to spell special words, special words will give you Word Cards.
Word Cards are like jokers, they all have a unique effect and are essential to getting enough points to beat the round, you’ll earn most of the points in the game from them.
Try to find combos between the Word Cards!