Should I point my domain to my IP or by using reverse DNS?

I'd recommend doing both. Adding an A record pointing your domain to your IP is essential for getting it to resolve correctly. As for rDNS, this is a DNS lookup that does the opposite by resolving your IP to your domain name.

For context/reference I'm linking a few sections from our guides that go over setting up your A records and rDNS.

• https://linode.com/docs/platform/manager/dns-manager/#edit-dns-records
• https://linode.com/docs/networking/dns/dns-records-an-introduction/#a-and-aaaa
• https://linode.com/docs/networking/dns/configure-your-linode-for-reverse-dns/