Press the green flag and wait 5 seconds until it changes to the first letter. Then just click (or press if you are on ipad or phone) to go to the next letter. If you want to go back to the beginning of the alphabet, press the green flag
I used ASL (American Sign Language) which is used in USA and Canada. Even if you don't know anybody who is deaf or mute, knowing ASL could help you in the future. And to make sure you are making your hands into the proper shape, do the letter in front of the mirror to practice. Next i will be doing numbers up to 1 hundred