Select the highlighted tile "W" and drag to "O", "R", then "D" to form the word "WORD"
Click on the highlighted "W" tile at position (row 4, col 4) to start forming your word.
While holding your mouse/touch, drag to the "O" tile at position (row 5, col 3).
Continue dragging to the "R" tile at position (row 4, col 3).
Finally, drag to the "D" tile at position (row 3, col 3) to complete the word "WORD".
Release the mouse button to complete the word and finish the tutorial.