Press with your mouse or touchscreen on the first letter and drag to form a word with adjacent letters. You can't use the same tile twice.
The minimum word length is four letters. Longer words are worth more points.
Each practice board is always different and your score isn't saved in any way. The daily challenge board is the same for all players, and your score will be recorded so it can be compared with other players' scores. The board changes at midnight UTC (5 PM Pacific Time).