Meaning: Used to give a positive answer or reply to a question, request, or offer; used to give an affirmative response.
Pronunciation: Dominant-handed fist bobbing back and forth, resembling a head nodding.
Semantic variation. Lexicalized fingerspelling / fingerspelled loanword. Used often with emphasis or excitement (repeated "YES+++").
Opposite for YES: NO.
One of some variations for "yep" or "yup".
Related signs: NOPE.
Meaning: an interjection variously used to express agreement, to make an acknowledgment to encourage to continue speaking, or to indicate a lack of interest or enthusiasm. It's generally to say "yes", "okay", "yeah" or simply a cue of active listening.
First 100 words.
As you feel more comfortable with the first few hundreds of ASL signs, progress further with your vocabulary and learn signing more.