The cheapest place to buy SSL certificates that I’m aware of:
Cloudflare introduces universal SSL
Two good blog posts on how the TLS handshake works:
Video explaining the math behind public encryption
self-signed certificate example:
Google’s announcement that they would begin discrediting sites that use SHA-1 certificates:
Google’s announcement that they will begin giving a ranking boost to sites serving content over HTTPS.
Comcast has been caught injecting ads into websites. They can’t do this if the site is served over HTTPS.