You're new to Starcraft II I take it? You don't import libraries, you add a dependency instead.
Go to "File -> Dependencies -> Add Standard" and add the dependency you want. I suggest using the "Nova Covert Ops (Art Mod)" dependency as it includes all other default dependencies.
Contrary to popular belief, it's not limited to those who have the Nova Covert Ops DLC, so you can safely use it.
The Story dependencies are not included, as those only contain stuff used for the campaign hubs (walking around the Hyperion/Leviathan/Spear of Adun).
You can add more than one dependency, the game will figure our the hierarchy automatically. There won't be any overlapping among Blizzard dependencies, so feel free to add as much as you want!
I'm not really new to StarCraft II. I know how to add dependencies, but I need triggers included in libraries, my main point of interest is Spear of Adun targeting UI for things like Solar Lance/Temporal Fields/Orbital Strike.