Why is this in the verbal noun section? Isn't this just an imperative form of the verb?
It would be really helpful if the section explained uses of the verbal noun besides the present of ongoing action––eg this usage, the imperative.
There’s no verbal noun usage in this particular exercise. One example of a verbal noun with an imperative mood verb would be Téigh a chodladh! (“Go to sleep!”).
Would 'ol an fion' be a command to drink the wine?
To one person, ól an fíon would be the command "Drink the wine", yes.
What would it be if the command were to more than one person?
Óligí an fíon
Alright. I'll wait till I get to that unit.
Why does it points 'drink' (sth femenine)? Would it be different it the object was masculine?
What is “it” in your question, and what do you mean by “points”?
It struck me blind!
What is the opposite of "ná"?