You got this!

Here's the overall process:

1. In your domain registrar, delete your DNS records. Then go to your domain name in your browser and check that it stopped working. Note: depending on your domain registrar, it may take from 5 minutes (on Namecheap) to 48 hours for the DNS changes to take effect so you just have to wait.
2. Create DNS A records to link your domain name to GitHub Pages' IPv4 addresses.
   
3. Create a CNAME record to link the www subdomain to GitHub Pages' domain name ([your_github_username].github.io).
4. Create AAAA records to link your domain name to the IPv6 addresses.
   
5. When you're done, your DNS records should look something like this (except replaced with your own GitHub Pages domain name):

Depending on your domain registrar, it could take from 5 minutes to 48 hours for your DNS records to take effect.

You can re-watch the video if you get stuck at any step. Good luck!

Optional

Some (but not all) domain registrars provide a DNS record called an ALIAS record, which can be used like a CNAME record, except it's for the base domain name (no subdomain). If your domain registrar offers ALIAS records, try deleting your A records and AAAA records and replacing them with an ALIAS record: