The installation process is not difficult, but depends on the server software to which the certificate is installed.
To purchase an SSL-certificate you will need to generate a CSR (Certificate Signing Request) on your server. CSR is a piece of encrypted text containing information about your company and domain name.
Confirmation request about issuing the certificate you will receive to your e-mail, which must be in the same domain for which SSL-certificate will be issued. By itself, an SSL-certificate is a text file that contains encrypted information that your server will be able to decipher when installation begins.
When installing a certificate on cPanel, first go to the SSL / TLS Manager. Next in the Certificate field enter certificate which was sent to you, and in the Key field enter key which was generated by CSR generator.
In the menu enter to SSL-certificates. In the Certificate field enter certificate which was sent to you, and in the Key field enter key which was generated by CSR generator.
Go to the section WEB and click Add Web Domain or edit if you have already created a domain. Tick the SSL Support. In the SSL Certificate field enter the certificate which was sent to you, and in the SSL Key field enter key which was generated by CSR generator.