Taps out a message (5)

I believe the answer is:

I'm a little stuck... Click here to teach me more about this clue!

'taps' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe there's an association between them I don't understand?

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for types that I've seen before include "Classes or groups" , "Sorts; kinds" , "Sorts - varieties" , "Uses a keyboard; sorts" , "Uses a keyboard to write" .)

I've seen this clue in the Evening Standard.

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