1) There are two places to check Foglight's version information. The first is by following the "About" link in the VERY bottom right hand corner of the web console. This will tell you the version of the Foglight Management Server that you are running. The second place to check is in the Administration -> Cartridges -> Cartridge Inventory section, which will tell you the exact version of the SQL Server Cartridge that you are running. If you have many cartriges in this list, look for one called DB_SQL_Server.
2) As far as the installation process, it will vary a bit based on the exact version of Foglight that you are running, but the link below will point you to a video that should help get you started:
3) By Events, I am assuming that you are refering to the set of metrics that Foglight collects. The link to that documentation is below:
4) By Templates, I am assuming that you are referring to the set of alarms that Foglight can raise. The link to that documentation is below:
If you have any other questions, please let me know.