I had some trouble figuring out how to add a Key Binding to my new Snippet in Sublime.
This answer may save some people some time...
As usual for key bindings go to Preferences -> Key Bindings
[
{ "keys": ["alt+d"], "command": "insert_snippet", "args": {"name": "Packages/User/myFirst.sublime-snippet"} },
{ "keys": ["ctrl+shift+d"], "command": "insert_snippet", "args": {"name": "Packages/User/mySecond.sublime-snippet"} },
{ "keys": ["alt+m"],"command": "open_markdown_preview" },
{ "keys": ["ctrl+shift+t"], "command": "open_terminal" }
]
The command insert_snippet is NOT the name of your snippet. It's command that tells Sublime to go look at the file you have named in the args.