This video explains about SSL Certificates because Actions speak more than words, and this video is an perfect example of that statement.
An ssl certificate is good in many ways, for the main part, SSL certificate encrypts your website data while it is being transmitted from Client (you) to the web server securely so that any hacker can not eavesdrop on your data while it's being transferred. For eg, your credit card information.
Let's Encrypt is a non-profit certificate authority by Internet Security Research Group that provides TLS encryption at no charge. It launched on April 12, 2016. Let's Encrypt certificates are valid for 90 days. During that time, you you can renew the certificate at any time.
GoGetSSL is a well known SSL brand for selling digital certificates from leading certificate authorities for more than 10 years.
In the modern web, Yes, it is important to have a green pad lock on the address bar of the browser. As to why, first of all, it increases visitor trust on the site which is important because losing customer data is losing their trust. Secondly, because of Chrome. As of beginning of July 2018, chrome will mark any website which don't have SSL marked as "not secure". Thirdly, websites with SSL Encryption ranks higher on Google Search Results. It also makes sure to the visitor that the data they provided on contact forms have gone securely to the serevr...
Cloudflare provides you with SSL certificate if you use their CDN proxy service and for that, you need to point your domain namserver to cloudflare nameservers. You can signup for cloudflare here.
Yes, Google too provides you free SSL if you sign up on their services like Google Sites, Blogger or Firebase and use a custom domain.
This is not well talked but you can get this certificate when you register a domain through OpenSRS, name.com, or through xolphin.com.
A chinese SSL provider wosign also provides free SSL certificates for securing your email, web servers! You can request SSL from them here. But, currently it may not be available.
Comodo provides a free SSL trial which is limited to one domain and is valid only for 30 days but them being one of the oldest certificate authority, their SSL is recognized in 99% of all browsers. You can sign up for one here.
GeoTrust provides free SSL certificate trial for 30 days, risk free. You can sign up for the free trial here.
BuyPass also provides you with a free SSL certificate for six months but you need to be a root on your server which is bad for Shared Hosting users. You can sign up for their service here.
ssl.com also provides free wildcard SSL certificates for 90 days. You can try out their SSL here.
ZeroSSL provides you with free unlimited SSL that supports multiple domains where free certificates are valid for 90 days. You can sign up for their service here.
PositiveSSL also provides you with free single domain SSL. You can sign up for their service here.
cPanel also provides you with a free DV SSL certificate with its AutoSSL bot. You can use this bot from SSL/TLS Status Option where it will auto install SSL on the added domains in cPanel.
Instant SSL Free trial provides you a free SSL for one FQDN (Fully qualified Domain Name) for 90 days. You can get it here.