EGOL...

... some people just won't RTM (this being a well mannered fora have ommitted the usual expletive adjective

)... perhaps
this page (two levels lower from link provided in OP) will be helpful.
Note: click each link (blue question) for additional information.
How are interests identified?
Interest targeting allows advertisers to target people based on information they’ve provided in their profile (timeline). This includes listed likes and interests, the Pages they like, apps they use, and other profile (timeline) content they’ve provided.
...
What is Topic targeting?
Topic targeting (marked with a #) lets you target everyone who has expressed interests closely related to the term you select. For example, "#Cooking" lets you reach interests like "cooking," "cooking tips," and "cooking and eating." Precise interests (unmarked) target people who have expressed that specific interest. For example, "cooking" includes only the interest "cooking."
I think the basics are well covered. The rest is a matter of spending a couple hundred dollars running tests before creating full ad campaigns.
Note: I recommend considering FB data and adjusting rather than simply plugging in whatever works in AdWords.