Click the green flag, obviously. Type in a 5 letter word that is real, use all lowercase. (Sorry, if a word doesn't work, tell me in the comments.) If a letter turns green, that means it's in the word and in the correct spot. If a letter turns yellow, that means it's in the word but in the WRONG spot. If a letter turns gray, that means it's not in the word. Please don't type words with double letters as it messes up the system. The wordle changes every day at 12AM EST or at 9PM PST (Daylight savings makes it 1AM EDT and 10PM PDT)
Credits to @Hobson-TV for the lists of words.