This article goes over Issuing SSL Certs using Let’s Encrypt in Ubuntu 16.04. The basic steps outlined in the video are adding the repository, installing certbot, issuing a certificate, and enabling SSL.
Let’s Encrypt @ https://letsencrypt.org
Certbot @ https://certbot.eff.org
sudo apt-get update
sudo apt-get install software-properties-common -y
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update
sudo apt-get install python-certbot-apache -y
sudo certbot --apache
After performing these steps you will make your site secure and it will automatically renew this certificate. This is a great set it and forget solution, expecially if you are running your own site on a budget.