Sure, there are many resources available online to learn about ECDSA. Here are some videos and articles that you might find useful:

- "Elliptic Curve Digital Signature Algorithm (ECDSA) Explained" by Blockchain Zoo: https://www.youtube.com/watch?v=3fh2sYDwZfM

- "What is ECDSA?" by Khan Academy: https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/digital-signatures

- "Elliptic Curve Cryptography: What is ECC? How does it work?" by Techquickie: https://www.youtube.com/watch?v=NMzK-nGhQEE

- "ECDSA: The digital signature algorithm of a better internet" by Blockgeeks: https://blockgeeks.com/guides/ecdsa/

I hope you find these resources helpful!