I have used GoDaddy's SSL. They are fairly cheap and they have some good tutorials.

Don’t we need to install a plugin to use many high end Google services such as Google Hangouts? If JavaScript/HTML can eliminate plugins then this shouldn’t be the case. The power, efficiency and security a well-managed plugin is still unrivaled by any open web technology. The majority of current and future mobile devices are powerful enough to handle browsers that will run most plugins including Silverlight, if they wanted. What’s needed is a Silverlight version that’s compatible with the new Universal shared project type. This would finally unite the Microsoft ecosystem of Phone Apps, Store Apps, WPF(Desktop), and Silverlight(Web). LONG LIVE SILVERLIGHT!!!! My two cents. On a side note: I bet Microsoft makes boat loads of money through Azure with all these JavaScript websites constantly calling into azure webservers.