You can set A record for your domain in order to point the domain to your server where you have hosted your website. Before you proceed to set A record, make sure you have hosted your website and set the Nameserver. Please refer to how to host a website and point to the domain.
Looking to set A record in SolidCP? Please refer to set A record in SolidCP.
Looking to set A record in cPanel? Please refer to set A record in cPanel.
Looking to set A record in Plesk? Please refer to set A record in Plesk Panel.
You can also manage your DNS A record from your Domain registrar directly if you are using their nameserver.
