You won't get far when building websites before you have to deal with DNS. There are plenty of DNS providers out there but the one I recommend is
Cloudflare.
These days Cloudflare is much more than a DNS service. However, even for simple websites, Cloudflare offers a bunch of cool features out of the box. If you set your domain DNS to use the Cloudflare proxy you get built-in DDoS protection, automatic HTTPS certificates, and a global CDN, all on their free plan.
And if you want to enhance the speed and privacy of your home network, Cloudflare can even help you with their free
1.1.1.1 DNS protocol.