Appealing to an authority is not a fallacy unless it's misapplied. Saying "I'd rather learn about X from an expert in X" is completely legitimate; it's common sense, really.
From your link:
>Although certain classes of argument from authority can constitute strong inductive arguments, the appeal to authority is often applied fallaciously: either the authority is not a subject-matter expert, or there is no consensus among experts in the subject matter, or both